reactionre‧ac‧tion /riˈækʃən/ ●●● S2 W2 AWL noun 
What was Jeff’s reaction when you told him about the job?reaction to the government’s reaction to the fuel crisisin reaction to something An emergency fund was set up in reaction to the famine.2moving quickly reactions [plural] your ability to move quickly when something dangerous happens suddenly: a skilled driver with very quick reactions3to food/drugs [countable] if you have a reaction to a drug or to something you have eaten, it makes you illreaction to a reaction to the immunizationhave/suffer a reaction She had a severe allergic reaction to the drug.cause/bring on/trigger a reaction Certain foods are more likely than others to cause allergic reactions.4science [countable, uncountable] a)a chemical change that happens when two or more substances are mixed together: a chemical reaction in the soil b)a physical force that is the result of an equally strong physical force in the opposite direction5change [singular] a change in people’s attitudes, behaviour, fashions etc that happens because they disapprove of the way in which things were done in the pastreaction against a reaction against the traditional values of the nineteenth century6against change [uncountable] formal strong and unreasonable opposition to all social and political changes: The revolutionary movement was crushed by the forces of reaction. → chain reactionCOLLOCATIONS– Meaning 1ADJECTIVES/NOUN + reactionsomebody’s first/initial/immediate reaction· His first reaction was to laugh.somebody’s gut reaction informal (=what they feel or decide immediately, before thinking)· You must trust your gut reactions.somebody’s instinctive reaction (=what they do immediately, before thinking)· Often your instinctive reaction is to blame someone else.a natural reaction· Anger is a natural reaction if you feel undervalued.a knee-jerk reaction (=an immediate reaction that happens without sensible thinking)· Environmentalists have a knee-jerk reaction against any development.an emotional reaction (=showing strong emotion, especially by crying)· I was surprised by her emotional reaction to the news.a positive/favourable reaction (=showing that someone agrees or likes something)· There has been a positive reaction to the campaign.a negative reaction (=showing that someone disagrees or dislikes something)· We are concerned about the negative reaction of some of our customers.mixed reactions (=some positive and some negative reactions)· The book met with mixed reactions.a violent/angry reaction· The artists were surprised by the violent reactions to their work.a delayed reaction (=a reaction that comes some time after an event)· You’re suffering a delayed reaction to the accident.the public reaction (=what the public think about something that happens)· The public reaction was less than encouraging.verbsprovoke/produce/bring a reaction· The decision provoked an angry reaction from the local tourist industry.get a reaction· We didn’t know what kind of reaction we would get.gauge somebody’s reaction (=judge or find out someone’s reaction)· He watched Jane’s face, trying to gauge her reaction.judging by somebody’s reactions· Judging by the audience’s reactions, the show will be a great success.COLLOCATIONS– Meaning 3adjectivesan allergic reaction· If you develop an allergic reaction to your sunscreen, change it.a bad reaction· She had a bad reaction to the medicine.an adverse reaction formal (=a bad reaction)· The patient died after having an adverse reaction to the drug.a severe reaction· A severe allergic reaction to the drug has killed five Americans.a slight/mild reaction· A spider’s venom usually causes only a slight reaction.verbshave/suffer a reaction· People who eat these products could have an allergic reaction.cause/bring on/trigger a reaction (=make someone ill)· Wheat is one of the foods that are most likely to cause a reaction.THESAURUSreaction someone’s feelings, and how they behave, because of something that has happened or been said: · I was stunned by the news, and my initial reaction was anger.· What was her reaction, when you told her that you were leaving?response what you say or do when someone says or does something to you: · The government’s immediate response was to reject the proposal.· The decision was made in response to requests from local residents.· We are still waiting to see if there is any response.reception a particular type of reaction to someone’s ideas, work etc – used especially in the following phrases: · The plan received warm reception from conference delegates (=they liked it).· The film received a mixed reception and commercially it was not successful (=many people did not like it).· The Association of Chief Police Officers gave the idea a cool reception (=they did not like it very much).· Alford’s views met with a hostile reception (=people were very disapproving).feedback advice, criticism, praise etc that you give to someone, telling them how well they are working: · Our English teacher gave us some feedback on our essays.· The feedback we have had from our customers has all been positive.· negative feedbackbacklash an angry or violent reaction by a group of people to the actions or decisions of others: · There has been a growing backlash against the government from angry voters.· fears of a right-wing backlash
EXAMPLES FROM OTHER DICTIONARIES
- an allergic reaction
- Can you tell us about your first reactions to this news?
- Environmentalists have a knee-jerk reaction against any sort of development, however "green" it might be.
- I wanted to write something thoughtful, not just leap in with my gut reaction.
- I was stunned by the news, and my initial reaction was anger.
- Maria's reaction to the birth of her sister was to demand more attention from her mother.
- My father was so surprised by this violent reaction that he fell silent.
- The revolution was defeated by the forces of reaction.
- A reaction to these difficulties may be withdrawal, apathy, or acting out behaviour.
- Carter was merely stunned by the reaction from the East; he was blown over backward by the reaction from the West.
- Culture often determines our reaction to events.
- Imagine the reaction if David Owen had appeared at Labour's 1989 conference.
- There are three aspects of the reaction to the epidemic in Britain that make me terribly uneasy.
THESAURUS
someone’s feelings, and how they behave, because of something that has happened or been said: · I was stunned by the news, and my initial reaction was anger.· What was her reaction, when you told her that you were leaving?
what you say or do when someone says or does something to you: · The government’s immediate response was to reject the proposal.· The decision was made in response to requests from local residents.· We are still waiting to see if there is any response.
a particular type of reaction to someone’s ideas, work etc – used especially in the following phrases: · The plan received warm reception from conference delegates (=they liked it).· The film received a mixed reception and commercially it was not successful (=many people did not like it).· The Association of Chief Police Officers gave the idea a cool reception (=they did not like it very much).· Alford’s views met with a hostile reception (=people were very disapproving).
advice, criticism, praise etc that you give to someone, telling them how well they are working: · Our English teacher gave us some feedback on our essays.· The feedback we have had from our customers has all been positive.· negative feedback
an angry or violent reaction by a group of people to the actions or decisions of others: · There has been a growing backlash against the government from angry voters.· fears of a right-wing backlash
Longman Language Activatorwhat someone says or does when they react to something what someone says or does when they react to something: · My father was so surprised by this violent reaction that he fell silent.reaction to/against: · Maria's reaction to the birth of her sister was to demand more attention from her mother.initial/first reaction: · I was stunned by the news, and my initial reaction was anger.· Can you tell us about your first reactions to this news?gut reaction (=a strong reaction that you have, although you are not sure why): · I wanted to write something thoughtful, not just leap in with my gut reaction.knee-jerk reaction (=a reaction you have without thinking about it first): · Environmentalists have a knee-jerk reaction against any sort of development, however "green" it might be.
your reaction to something that someone has said to you, done to you, or asked you for: · The story has provoked a strong response from the Chinese.· "You've persuaded me," she laughed, amazed at her own response. response to: · Tina's outburst was a delayed response to her husband's behaviour the week before.get a response: · We've tried to include Susan in our social activities, but we get no response.in response to something (=as a way of responding): · In response to local demand, we will be opening this store from nine till seven on Sundays.
advice, criticism, praise etc that you give to someone, telling them how well they are working: · We are very encouraged by the feedback we've had from our shareholders.give somebody feedback/give feedback (to somebody): · Every Friday, Mr James would hand out the students' essays and give them some feedback.feedback on: · It is important to give employees regular feedback on their performance.positive/negative feedback: · I'm lucky to work for an employer who gives positive feedback on my work.
an angry or violent reaction by a group of people to the actions or decisions of others: backlash against: · Members of the Rifle and Pistol Club fear a public backlash against their sport after a recent armed raid in the village.· The attacks have sparked a bitter backlash against the revolutionary forces.backlash from: · a growing backlash from angry voters
when someone reacts much too strongly to something: · I'm not arguing in favor of cannabis. I'm just saying we should be careful of overreaction.· The appeal court judge described the sentence as a gross overreaction to the recent spate of bombing campaigns.
the ability to react quickly to be able to react quickly to moving objects, danger etc: · Alcohol slows a driver's reactions, making it harder to avoid an accident.· He was a natural boxer, with a cold temper, fast reactions and a killer instinct.
the natural ability to react quickly and well to dangers etc, without having to think about what you are doing: · Bernice moved to slap him, but with lightning reflexes, he grasped her arm.· City got only one goal, and owed everything to the extraordinarily quick reflexes of their goalkeeper.
when you do or say something without thinking · Without thinking, Charlotte hugged the girl to try to comfort her.without thinking about · Most US companies are still spewing out carbon dioxide without thinking about its potential costs.
spoken if you give an answer off the top of your head , you say it without thinking about it for very long and without being sure it is correct: · "How much is the house worth?" "Off the top of my head, I'd say it's worth maybe $160,000."
if you say or do something in the heat of the moment , you do it very suddenly and without thinking when you are feeling angry or excited, so that you feel sorry about it afterwards: · "In the heat of the moment, my emotions took over and I hit him," Harper admitted.· Our children need to know not only how to prevent pregnancies, but also the long-term effects of a decision they make in the heat of the moment.
an automatic response, reaction, or answer is one that happens immediately and without you having to think, especially because you have done it many times before: · A teacher's automatic reaction is to correct mistakes in language.· Elizabeth immediately flew into a rage - her automatic response to any kind of criticism.
if you do something automatically , you do it as a natural reaction and without thinking, because it is what you always do: · His mother continued to talk angrily, and Tim's thoughts automatically switched to more pleasant subjects.· You cannot automatically assume that everything your teacher says is correct.
a reflex action, response, or movement is a physical movement that you make as a natural reaction to something, without having to think about doing it: · a reflex eye movement· At birth, an infant can perform only simple reflex actions and behaviours.
a reaction that someone makes without thinking at all, because it is the way they always react - use this about a reaction that you expect and disapprove of: · Their knee-jerk reaction is to object to everything the management suggests.· If a journalist's judgement is questioned, the knee-jerk reaction is usually, "I have a right to print whatever I want, so I will."
an off-the-cuff remark is one that you make without thinking carefully and without any preparation: · The press officer said that the president's statement was an off-the-cuff remark, not as an official statement of policy.
WORD SETSacetate, nounacid, nounacidic, adjectiveacidify, verbactive, adjectiveadditive, nounagent, nounalchemy, nounalcohol, nounalkali, nounalkaline, adjectiveamalgam, nounantioxidant, noun-ate, suffixatomic number, nounbase, nounbauxite, nounbeaker, nounbenzene, nounbiochemistry, nounbitumen, nounbleach, nounbond, nounbonding, nouncalcify, verbcarbohydrate, nouncarbonate, nouncarbon dioxide, nouncarbonize, verbcatalyst, nouncaustic, adjectivechain reaction, nounchemical, nounchemical, adjectivechemical reaction, nounchemist, nounchemistry, nounchlorinate, verbcitric acid, nouncombustion, nounconcentration, nouncondense, verbcontaminant, nouncontaminate, verbcontaminated, adjectivecorrode, verbcorrosion, nouncorrosive, adjectivecrucible, nouncrystal, nouncrystallize, verbcyanide, nounDDT, noundecay, verbdecay, noundecompose, verbdegrade, verbderive, verbdetoxification, noundextrose, noundioxin, noundispersion, noundissolve, verbdistill, verbeffervesce, verbeffervescent, adjectiveelectrolysis, nounelectrolyte, nounelectroplate, verbemulsify, verbemulsion, nounenzyme, nounexpand, verbfatty acid, nounferment, verbferment, nounflashback, nounflask, nounformaldehyde, nounformula, nounfructose, nounfungicide, nounfuse, verbgas, noungaseous, adjectiveglucose, noungranular, adjectivegraphite, nounhallucinogen, nounhelium, nounherbicide, nounhydrate, nouninert, adjectiveinsoluble, adjectiveinsulin, nounion, nounionize, verblactic acid, nounlimescale, nounlitmus, nounlitmus paper, nounlitmus test, nounmethane, nounmixture, nounmolecule, nounneon, nounnerve gas, nounneutralize, verbneutron, nounnitric acid, nounnucleic acid, nounnucleus, nounnutrient, nounorganic chemistry, nounosmosis, nounoxidize, verboxyacetylene, nounoxygenate, verbozone, nounpart, nounpectin, nounpesticide, nounpestle, nounpetrochemical, nounpH, nounphotosynthesis, nounplasma, nounpolyunsaturated, adjectivepotash, nounprecipitate, verbprecipitate, nounprecipitation, nounproduct, nounprussic acid, nounquicklime, nounradioactive, adjectiveradioactivity, nounradiology, nounreact, verbreaction, nounreactive, adjectivereagent, nounresidue, nounretort, nounriboflavin, nounsalt, nounsaltpetre, nounsaturate, verbsaturated, adjectivesaturation, nounsaturation point, nounsemiconductor, nounsoft, adjectivesolid, nounsolution, nounsolvent, nounstability, nounstabilizer, nounstable, adjectivestarch, nounsteam, nounsucrose, nounsulphate, nounsulphide, nounsulphur, nounsulphur dioxide, nounsulphuric acid, nounsulphurous, adjectivesurface tension, nounsuspension, nounsynthesize, verbsynthetic, adjectivetannin, nountartaric acid, nounTNT, noununstable, adjectivevalence, nounvitamin, nounvolatile, adjectivevulcanize, verbwater softener, nounwater-soluble, adjectivewater vapour, nounwetting agent, noun
COLLOCATIONS FROM THE ENTRY Meaning 1ADJECTIVES/NOUN + reaction an allergic reaction to nuts
· His first reaction was to laugh.
informal (=what they feel or decide immediately, before thinking)· You must trust your gut reactions.
(=what they do immediately, before thinking)· Often your instinctive reaction is to blame someone else.
· Anger is a natural reaction if you feel undervalued.
(=an immediate reaction that happens without sensible thinking)· Environmentalists have a knee-jerk reaction against any development.
(=showing strong emotion, especially by crying)· I was surprised by her emotional reaction to the news.
(=showing that someone agrees or likes something)· There has been a positive reaction to the campaign.
(=showing that someone disagrees or dislikes something)· We are concerned about the negative reaction of some of our customers.
(=some positive and some negative reactions)· The book met with mixed reactions.
· The artists were surprised by the violent reactions to their work.
(=a reaction that comes some time after an event)· You’re suffering a delayed reaction to the accident.
(=what the public think about something that happens)· The public reaction was less than encouraging.
verbs· The decision provoked an angry reaction from the local tourist industry.
· We didn’t know what kind of reaction we would get.
(=judge or find out someone’s reaction)· He watched Jane’s face, trying to gauge her reaction.
· Judging by the audience’s reactions, the show will be a great success.
Meaning 3adjectives· If you develop an allergic reaction to your sunscreen, change it.
· She had a bad reaction to the medicine.
formal (=a bad reaction)· The patient died after having an adverse reaction to the drug.
· A severe allergic reaction to the drug has killed five Americans.
· A spider’s venom usually causes only a slight reaction.
verbs· People who eat these products could have an allergic reaction.
(=make someone ill)· Wheat is one of the foods that are most likely to cause a reaction.
COLLOCATIONS FROM OTHER ENTRIES an allergic reaction to nuts· The figures are unlikely to excite any reaction on the money markets.
· The report provoked a furious reaction from staff.
COLLOCATIONS FROM THE CORPUSADJECTIVE· My physician has filed an adverse drug reaction report.· He eventually received a stack of complaints about adverse reactions, including cramps, nausea, heart palpitations, and severe diarrhea.· By May 1982 another thousand adverse reactions may have been reported.· The second is not to use the medication with those who are at risk for a serious adverse reaction.· Other adverse reactions due to systemic absorption, such as hypoglycaemia, rash, and acute renal failure, are rare.· Spokesmen said they have gotten few, if any, reports of adverse reactions from consumers who used their products properly.· However, Richard Gough has shown no adverse reaction to his comeback game against Brugge and will lead out Rangers today.· The adverse reactions experienced by the patient reported on may therefore be attributable to the drug regimen and not solely to dexamethasone.
· Rod McCallum collapsed with a rare allergic reaction.· Nor did any allergic reactions arise in those who ate the meat of animals who had been fed a gene-spliced soybean diet.· I kept her in my bedroom for another three weeks, so that Mum wouldn't have an allergic reaction.· I talk about a rash on my arm that looks like an allergic reaction but is in fact the heartbreak of psoriasis.· Particles from diesel exhausts may also cause allergic reactions in their own right.· Put briefly, there was a kind of allergic reaction between On Location and the brand-new edition of Microsoft Word.· Philippa remembered Buerk's advice on severe allergic reactions and called an ambulance.· As a result, more people became sensitized to latex and developed allergic reactions.
· Enzymes are protein molecules whose function is to speed up chemical reactions: that is, they are catalysts.· Fuel cells, which provide electricity generated by a chemical reaction between hydrogen and oxygen, constitute one part of that research.· In other words, a chemical reaction could only proceed if the system lost energy.· The total energy given off is thousands of times more than any conceivable chemical reaction could produce.· Most chemists will tell you that, once chemical reactions become complex enough, the end result will be life.· Commercially pure ethanol is produced using a variety of chemical reactions to eliminate the water.· We therefore have to consider the kinetics of weathering by examining those factors which affect the late of chemical reactions.· Enzymes increase the rate of a specific chemical reaction by lowering the activation energy needed for the reaction to proceed.
· An emotional reaction is what the caller wants.· I tried to empathize with their own differing emotional reactions and the fact that they were falling into their own traps again.· He still showed little emotional reaction though he was evidently angry with himself for letting his natural arrogance be so easily quashed.· The interactive nature of external events, and your emotional and physical reactions to them, can make work toxic.· Selection will be based on our priorities, on explicit criteria and fundamentally on our emotional reactions.· They go through similar identifiable stages of emotional reactions.· I am not prone to emotional or temperamental reactions in victory or defeat.· What is wanted is an immediate, largely emotional reaction.
· His immediate reaction was that there was an oil leak.· The State Department had no immediate reaction.· My immediate reaction, whether it be a man or a woman, is to think the worst of them.· They got an immediate, positive reaction to their new gallery.· They need time to digest radical change, otherwise their immediate reaction is negative.· The Republican National Committee had no immediate reaction to the Democrats' changes.· The children's immediate reaction was a sense of relief at having arrived somewhere.· To keep everyone happy press officer David Begg, from Glasgow, recorded immediate reactions.
· From a distance of two weeks, the initial reaction to defeat also seems unnecessarily despondent.· Accordingly, the initial reaction of the equity markets was utterly perverse.· As an initial reaction the girls' parents might have been shocked by what they got up to.· The initial reaction of the community to the news of the dump was that it was only what could be expected.· The initial setting reaction is photochemical polymerisation.· My initial reaction was to punch some one....· My initial reaction had been a prime, although mild, example of ageism in operation.· My initial reaction was relief: We had averted another financial crisis.
· Our instinctive reactions seem to be rooted in the past and they are not always appropriate to twentieth-century living.· This instinctive reaction is independent of our intellect; the reaction does not depend on knowledge or intellectual assessment of risk.· But pure, instinctive reaction moves his body out of harm's way.· It is difficult to prevent this sort of instinctive reaction.· It was an instinctive reaction in defence of my guest, but I felt uncomfortable about it afterwards.· As a practising novelist, my instinctive reaction is to repudiate the deconstructionist position.· The crying baby is being expressive, although her cries are not really language at all, but instinctive reactions to the environment.
· Linda's natural reaction was to go round and shout at Alma.· That is a very natural human reaction, and I understand it.· Nate Cocello allowed a knowing smile to cross his face at what he knew would be the natural reactions of line managers.· Sir Roy's depression could have been a natural reaction to being told that he suffers from Parkinson's disease.· This natural protective reaction needs to be discouraged after surgery to avoid the complications of immobility.· In part, McKenna sees this as a natural reaction to the ecological crisis brought on by the modern era.· Tunnel vision and mutual incomprehension were natural reactions.· Some are scarcely affected, whereas others need longer training to overcome their natural reactions.
· Those who seek to lead must act with subtlety and caution or they will meet with strong negative reactions.· The absence of negative reaction was almost eerie.· The evidence is of both positive and negative reactions to the older worker as employee and co-worker.· Their negative reaction was added impetus.· The trauma is still exerting an influence, but in the negative reactions it pushes against the trauma being recreated.· He had news ... news which would doubtless upset Georgi Kirov, and he feared the man's negative reaction.· This relative freedom from negative reaction is what I imagine most people mean when they say they are happy in their work.
· Eventually the temperature rose sufficiently to trigger the sort of nuclear reactions that power every star.· This is the famous nuclear chain reaction.· Their evolution is governed by the nuclear reactions going on inside the star and making it shine.· Eventually, however, the hydrogen in the core runs out and so nuclear reactions involving heavier elements take over.· This is the first stage of a nuclear reaction which can lead to an explosion.· Soon the density becomes great enough for the spheres of gas and dust to collapse and start individual nuclear reactions.· Stars will remain stable like this for a long time, with heat from the nuclear reactions balancing the gravitational attraction.· In 1942, the world's first nuclear chain reaction took place in Chicago.
· The evidence is of both positive and negative reactions to the older worker as employee and co-worker.· From every event we received enthusiastic, positive reaction, and requests you come back for a repeat engagement.· A positive reaction was seen in the bowel wall, both in patients with Crohn's disease and in controls.· They got an immediate, positive reaction to their new gallery.· I also find it incredible that the demise of Aldershot has not led to a positive reaction to assist the smaller clubs.· He said he got a positive reaction from council members to his remarks about Western aid but declined to elaborate.· Naipaul learns that the only positive reaction is acceptance; but in a whole year he doesn't achieve it.· Many substances, particularly food extracts, often give false positive reactions in allergy skin testing.
· After nearly 8,000 reported attacks on foreigners since the start of 1992, it was the first big, violent public reaction.· Those original Contract polls were not thorough enough to anticipate public reaction to really stupid political behavior.· But the public reaction seemed one of amused appreciation rather than of apprehension.· In all candor, my colleagues will be interested in what the public reaction is.· The public reaction was generally that parents and doctors should decide.· Challenged by such public reaction, inmates in college programs are often willing to evaluate their experience.· The importance of both the media and the related public reaction to patterns of crime and deviance is, therefore, well-established.
· To deal with the signals produced by these sense organs they have considerable brains and very quick reactions.· The report also brought quick reaction from the campaign of Republican presidential candidate Bob Dole.· Underlying everything, therefore, is a need for quick reaction, coupled with clarity and consistently about strategic aims.· He may well be a skilled driver with quick reactions, but he will deliberately take risks.· We will never know how many lives could have been saved by a quicker reaction.
· The latest addition is International Blue Shield, aiming to provide rapid reaction teams when an unexpected threat emerges.· Conditions like these would likely trigger a rapid reaction.· The system efficiently delivered the rapid reaction force it was designed to produce.· Andrei Krestyaninov, a commander of an elite rapid reaction force leading the attack, the Itar-Tass news agency reported.· Developed countries speak of rapid reaction forces as the future of their military strategies.
· Philippa remembered Buerk's advice on severe allergic reactions and called an ambulance.· And nearly every year, a few of them have severe reactions to the drug.· The most severe allergic reaction, anaphylactic shock, can kill through suffocation.· He said he suspects it was a small amount because Reitan would have had a more severe reaction otherwise.· Its main cause in adults is severe drug reaction.
· Those who seek to lead must act with subtlety and caution or they will meet with strong negative reactions.· New research reveals that, as children age, working fathers continue to have strong reactions about the care of their children.· Although they produce the strongest reactions, owls are not the only animals to provoke mobbing reactions.· The more you get bitten, the stronger the allergic reaction.· He had very strong associated reactions in the arm whenever he moved at all.· Mesmeric and hypnotic, his prodigious output evokes strong reactions.· At first this procedure evoked a strong reaction from faculty heads who perceived the dangers of over-personalised accounts.· Their strongest reaction is to sour tastes; next comes bitter, then salt and finally sweet.
NOUN· Alu polymerase chain reaction is enormously valuable.· The demise of Woosung could have a chain reaction on other subcontractors relying on a government helping hand, analysts said.· That sets off a chain reaction of difficulties.· In a chain reaction on a world scale, prices on innumerable commodities skyrocketed within weeks.· Products of the chain reaction were fractionated by size in agarose gels to detect the presence of insertions or deletions.· Devices that are designed to produce stable chain reactions are called nuclear reactors.· When this was applied to tissue sections, however, most samples were found to inhibit the polymerase chain reaction.· This continuing process is called a chain reaction.
· The system efficiently delivered the rapid reaction force it was designed to produce.· The sirens went off, and we were loaded into trucks and told we were going out there as a reaction force.· Developed countries speak of rapid reaction forces as the future of their military strategies.· Andrei Krestyaninov, a commander of an elite rapid reaction force leading the attack, the Itar-Tass news agency reported.
· Personal reflections My gut reaction has always been against the placing of bolts, and I've never used them.· But my gut reaction was that, despite his reputation for being hot tempered, he was a friendly, likable child.· Dalziel's bullet-riddled gut reaction was right from the start.· For the ordinary viewer, logical argument gives way to his or her gut reactions and personal experience in responding to people.· It is a gut reaction to the sense of having been taken over by affluent and alien strangers.· Perhaps he didn't have gut reactions any more.· I've got this gut reaction.
· Simple reaction time is a fraction of the time required to react even when having to choose between only two possibilities.· But yes, that does indeed slow down reaction times.· Also, by separating the simple reaction time we see that reaction time increases steadily as the amount of discrimination required increases.· The benefits included higher bone density, faster reaction times, greater muscle strength and better balance.· So there may be some difference in the reaction time.· From this graph it can be seen that, generally, as the level of processing increases reaction time increases.· Both simulations and real driving experiments have shown that such calls slow reaction times by a half-second or more.
VERB· Particles from diesel exhausts may also cause allergic reactions in their own right.· Researchers are not sure why Melanotan-2 caused such a reaction.· What on earth, she was wondering, had caused that un-Jake-like reaction?· Indeed, stressors do cause physiological reactions.· Residues in meat may also cause allergic reactions in sensitive people.· In a small piece of U-235, the neutrons given off by decay generally escape without causing further reactions.· Protein molecules called enzymes are machines in the sense that each one causes a particular chemical reaction to take place.· Pernicious anemia is thought to be caused by an autoimmune reaction against gastric parietal cells resulting in impaired secretion of intrinsic factor.
· In every case two chemicals are mixed to produce the reaction.· When Gore was the Democratic front-runner for the presidential election, his satellite drew a sharply mixed reaction.· The very individual-some have called it idiosyncratic-styling met with a mixed reaction.· Some couples are ecstatic, while others have mixed reactions.· Other audiences are likely to be mixed in reaction to this odd mixture of thriller and twisted romance.
· Whether a particular chemical reaction is likely to occur is related to the change in free energy involved.· How is it possible for endothermic processes to occur spontaneously, and will a given reaction occur spontaneously?· Phenytoin should be stopped immediately when any of these idiosyncratic reactions occur.· I do not believe that reaction occurs except through individual resistance in the first place.· A lot of that reaction occurs simply because we are human.· Thus, energy or enthalpy change alone can not help us to predict whether a reaction will occur or not.· Thus chemical reactions occur in the vapor phase.
· The blatant placing of a bolt in a Lakeland mountain crag produced considerable reaction throughout the rock climbing fraternity.· Devices that are designed to produce stable chain reactions are called nuclear reactors.· Methylated bile acids were produced by reaction at room temperature for one hour and subsequently evaporated to dryness under nitrogen.· Communication that demonstrates empathy for the listener will produce highly favorable reactions.· Often, therefore, relativism produces, through reaction to it, precisely what it sets out to destroy: increased dogmatism.· How was it possible for Kant to produce such very different reactions?· In every case two chemicals are mixed to produce the reaction.· But the diarrhoea produced by this reaction may, in turn, cause lactase deficiency.
· This call for help provokes a specific urgent reaction and interaction in the listener.· To confront that reality some sorry, drunken night on the shore of an Arizona lake might provoke any of 100 reactions.· They say some chief constables are unwilling to enforce the law, in case it provokes a violent reaction from the travellers.· Nevertheless, the article provoked an avalanche of reaction.· It immediately provoked a furious reaction from staff and unions.· But critics say the police seem intent on provoking a violent reaction.· Although they produce the strongest reactions, owls are not the only animals to provoke mobbing reactions.
· Only 10 percent of male students showed such reactions to a story about a student called John.· Despite my general silence and hesitation, I must have shown enough of my reaction at certain times to make her wonder.· Napoleon showed no reaction to his mens' adulation.· After the initial shock, Daley felt cornered and harassed, and it soon showed in his reaction to questioning.· Viv Richards shows his reaction at Gower's exit as the ritual dance begins.· In this time of change, the average man was simply showing the commonplace reaction to the insecurity of the competitive system.· He still showed little emotional reaction though he was evidently angry with himself for letting his natural arrogance be so easily quashed.· However, Richard Gough has shown no adverse reaction to his comeback game against Brugge and will lead out Rangers today.
· These people suffer the same reactions as they did when diagnosed the first time, but with deeper levels of distress.· The Labour Party in parliament did not immediately suffer from the reaction against the General Strike.· Unfortunately, we have no way of predicting who may suffer an allergic reaction to a particular drug.· Tony Norman, the Sunderland keeper, also withdrew after suffering a reaction to a hand operation.
PHRASES FROM OTHER ENTRIES► follow your instincts/feelings/gut reaction etc
- But my gut reaction was that, despite his reputation for being hot tempered, he was a friendly, likable child.
- For the ordinary viewer, logical argument gives way to his or her gut reactions and personal experience in responding to people.
- I have a gut feeling that the old partnerships between nature and culture have momentarily slipped out of our reach.
- It is more a gut feeling-a visceral distrust of foreigners.
- It was just a gut feeling, a sense of unease.
- Male speaker There's gut feeling amongst the officers on the ground that it may be drugs related.
- Personal reflections My gut reaction has always been against the placing of bolts, and I've never used them.
- We worked on gut feeling and it was very difficult to control and manage all the development work because of the technology involved.
- Because histoplasmosis can mount an immune response, skin tests are often done.
- Discussion Coeliac disease probably represents an aberrant immune response by antigen specific T cells of the small intestine to certain cereal peptides.
- It is known which specific immune responses are required for therapeutic benefit, so we have proceeded cautiously.
- Many patients have a strong family history of allergies, which are genetic and involve excessive immune reaction.
- Other molecules, the happens, also generate an immune response.
- Significant numbers of larvae reach the lungs and migrate to the bronchioles where they are killed by the animal's immune response.
- The reason: The vitamin is involved in raising a healthy immune response.
- This immune response leads to the destruction of the beta cells that make insulin.
- As its image as an independent search for truth has changed, scientists have had mixed reactions.
- Carrick's captaincy received mixed reviews.
- Central Florida school leaders gave the proposed passing scores mixed reviews Wednesday.
- Math Blaster 1 and 2 from Davidson got mixed reviews.
- The campaign received mixed reviews inside and outside Hollywood, with some accusing Jackson of bad timing.
- The seventeenth edition met with mixed reactions.
- When asked how beneficial the training had been there was a somewhat mixed response.
- When Gore was the Democratic front-runner for the presidential election, his satellite drew a sharply mixed reaction.
WORD FAMILYnounreactionreactorreactionaryoverreactionadjectivereactionaryreactiveverbreactoverreact
1to a situation/event [countable, uncountable] something that you feel or do because of something that has happened or been said: What was Jeff’s reaction when you told him about the job?reaction to the government’s reaction to the fuel crisisin reaction to something An emergency fund was set up in reaction to the famine.2moving quickly reactions [plural] your ability to move quickly when something dangerous happens suddenly: a skilled driver with very quick reactions3to food/drugs [countable] if you have a reaction to a drug or to something you have eaten, it makes you illreaction to a reaction to the immunizationhave/suffer a reaction She had a severe allergic reaction to the drug.cause/bring on/trigger a reaction Certain foods are more likely than others to cause allergic reactions.4science [countable, uncountable] a)a chemical change that happens when two or more substances are mixed together: a chemical reaction in the soil b)a physical force that is the result of an equally strong physical force in the opposite direction5change [singular] a change in people’s attitudes, behaviour, fashions etc that happens because they disapprove of the way in which things were done in the pastreaction against a reaction against the traditional values of the nineteenth century6against change [uncountable] formal strong and unreasonable opposition to all social and political changes: The revolutionary movement was crushed by the forces of reaction. → chain reactionCOLLOCATIONS– Meaning 1ADJECTIVES/NOUN + reactionsomebody’s first/initial/immediate reaction· His first reaction was to laugh.somebody’s gut reaction informal (=what they feel or decide immediately, before thinking)· You must trust your gut reactions.somebody’s instinctive reaction (=what they do immediately, before thinking)· Often your instinctive reaction is to blame someone else.a natural reaction· Anger is a natural reaction if you feel undervalued.a knee-jerk reaction (=an immediate reaction that happens without sensible thinking)· Environmentalists have a knee-jerk reaction against any development.an emotional reaction (=showing strong emotion, especially by crying)· I was surprised by her emotional reaction to the news.a positive/favourable reaction (=showing that someone agrees or likes something)· There has been a positive reaction to the campaign.a negative reaction (=showing that someone disagrees or dislikes something)· We are concerned about the negative reaction of some of our customers.mixed reactions (=some positive and some negative reactions)· The book met with mixed reactions.a violent/angry reaction· The artists were surprised by the violent reactions to their work.a delayed reaction (=a reaction that comes some time after an event)· You’re suffering a delayed reaction to the accident.the public reaction (=what the public think about something that happens)· The public reaction was less than encouraging.verbsprovoke/produce/bring a reaction· The decision provoked an angry reaction from the local tourist industry.get a reaction· We didn’t know what kind of reaction we would get.gauge somebody’s reaction (=judge or find out someone’s reaction)· He watched Jane’s face, trying to gauge her reaction.judging by somebody’s reactions· Judging by the audience’s reactions, the show will be a great success.COLLOCATIONS– Meaning 3adjectivesan allergic reaction· If you develop an allergic reaction to your sunscreen, change it.a bad reaction· She had a bad reaction to the medicine.an adverse reaction formal (=a bad reaction)· The patient died after having an adverse reaction to the drug.a severe reaction· A severe allergic reaction to the drug has killed five Americans.a slight/mild reaction· A spider’s venom usually causes only a slight reaction.verbshave/suffer a reaction· People who eat these products could have an allergic reaction.cause/bring on/trigger a reaction (=make someone ill)· Wheat is one of the foods that are most likely to cause a reaction.THESAURUSreaction someone’s feelings, and how they behave, because of something that has happened or been said: · I was stunned by the news, and my initial reaction was anger.· What was her reaction, when you told her that you were leaving?response what you say or do when someone says or does something to you: · The government’s immediate response was to reject the proposal.· The decision was made in response to requests from local residents.· We are still waiting to see if there is any response.reception a particular type of reaction to someone’s ideas, work etc – used especially in the following phrases: · The plan received warm reception from conference delegates (=they liked it).· The film received a mixed reception and commercially it was not successful (=many people did not like it).· The Association of Chief Police Officers gave the idea a cool reception (=they did not like it very much).· Alford’s views met with a hostile reception (=people were very disapproving).feedback advice, criticism, praise etc that you give to someone, telling them how well they are working: · Our English teacher gave us some feedback on our essays.· The feedback we have had from our customers has all been positive.· negative feedbackbacklash an angry or violent reaction by a group of people to the actions or decisions of others: · There has been a growing backlash against the government from angry voters.· fears of a right-wing backlash