concentrationcon‧cen‧tra‧tion /ˌkɒnsənˈtreɪʃən $ ˌkɑːn-/ ●●● S3 W2 AWL noun 
She needed all her powers of concentration to stop herself from slipping on the icy road. Lack of concentration was a real problem. I lost my concentration and fell asleep.2[uncountable] a process in which you put a lot of attention, energy etc into a particular activityconcentration on (doing) something concentration on your health concentration on providing value and service3[countable, uncountable] a large amount of something in a particular place or among particular peopleconcentration of the concentration of greenhouse gases in the atmosphere the concentration of power in the hands of a few4[countable] technical the amount of a substance contained in a liquidhigh/low concentrations Additives are expensive but are used in very low concentrations.concentration of allowable concentrations of pesticides in drinking waterCOLLOCATIONSverbssomething takes concentration (=needs concentration)· Playing a musical instrument takes a lot of concentration.something requires/demands concentration formal· Writing an exam requires great concentration.lose (your) concentration· Halfway through the game, he seemed to lose concentration.break somebody’s concentration (=stop someone concentrating)· The telephone rang and broke my concentration.disturb somebody’s concentration· She slipped out of the room, trying not to disturb his concentration.phrasessomebody’s powers of concentration (=someone’s ability to concentrate hard)· Great athletes are known for their powers of concentration.a lack of concentration· A lack of concentration when you are driving can be fatal.a lapse in/of concentration (=a short time when you do not concentrate)· That brief lapse of concentration resulted in a goal for the other team.adjectivesgreat/deep concentration· My work demands great concentration.poor concentration· The boy had behavioural problems and suffered from poor concentration.total concentration· I was impressed by her total concentration on the game.intense concentration (=very great concentration)· The job demands intense concentration.concentration + NOUNa concentration span (=the length of time that you are able to concentrate)· Young children have a short concentration span.
EXAMPLES FROM OTHER DICTIONARIES
- A good night's sleep will improve your concentration.
- His face was solemn with concentration.
- Plummer said she plans to continue her concentration on the 3,000 meter race.
- A lack of response would suggest that the high concentration of alcohol is the principal factor.
- It was only later that the aesthetic dimension of literary study became emphasized, with an accompanying concentration on the fictional genres.
- So, supposing I tried, the task would demand total concentration.
- The result is that the concentration of neurotransmitters in a synapse increases and the normal actions of the neurotransmitter is enhanced.
- Used in the right concentrations, they colour hair for up to six washes and add a protective film.
Longman Language Activatorto listen and watch carefully
to listen to and watch carefully what you are doing, what is happening, or what someone is saying: · Judith never pays attention in class.pay attention to: · The TV was on, but Jamal wasn't really paying attention to it.pay somebody/something attention: · I often find myself nodding and smiling at my children without really paying them much attention.pay close/careful attention: · Lawyers around the country were paying close attention to the trial.
to think very carefully about something that you are doing, without being interrupted: · I tried to read a few pages, but I found it hard to concentrate.concentrate on: · There were so many people talking that I couldn't concentrate on the music.· Sherman sat hunched forward and staring through the windshield, trying to concentrate on the traffic.
your ability to think carefully about what you are doing without being interrupted: · His face was solemn with concentration.concentration on: · Plummer said she plans to continue her concentration on the 3,000 meter race.
to continue to pay attention to something especially when you are very excited or worried about something else: · Just keep your mind on the driving -- I'll figure out where we are.· Bill couldn't keep his mind on anything but the verdict.
to keep watching something carefully, so that you do not make any mistakes: · We had to keep our eyes on the sandy path to avoid the roots and rocks in the way. · Keep your eyes on the ball -- now swing!
to pay attention to and think about something, often allowing it to affect a decision - used especially in writing: · There is a lot of criticism of the new law and a number of politicians are beginning to take notice.take notice/note of: · No one took notice of me until I pulled out my notebook and started writing.· The organization began to take note of its public image.sit up and take note/notice: · As usual, Greenspan's announcement made the financial world sit up and take notice.
someone who is attentive pays careful attention to someone that they are listening to, watching or looking after: · Hecke's new work has something of interest for both the casual and attentive viewer.attentive to: · The crew were extremely attentive to the passengers' safety.
the amount of time that you are able to carefully listen or watch something that is happening without getting tired or bored: have a short/limited attention span: · Kids of his age typically have a very short attention span.
not paying attention to what is happening · What did the announcers just say? I wasn't paying attention.not pay attention to · When you're young, you don't pay attention to what your parents are saying half the time.
to not pay attention because you are thinking about pleasant things or imagining things that you would like to happen: · Blackthorne was sitting alone in a corner of the garden, daydreaming.daydream about: · Almost anyone who has ever read a good book has daydreamed about writing his or her own best-seller.
British informal to stop paying attention to something because you are bored, or to stop thinking about your work after you have finished in the evening and relax: · In the end I got sick of the conversation and switched off.· It's difficult for teachers to switch off when they go home at night.
British spoken to not be paying attention to anything or anyone around you and seem to be thinking about something very different: · Sorry, I was miles away. What did you say?· I don't mean to disturb you, you looked miles away -- but there's a call for you.
if your mind wanders you are no longer paying attention, usually because you are bored or because something is worrying you: · I tried hard to concentrate, but my mind kept wandering.your mind wanders to/from: · His mind wandered to the things he was trying not to think about.let your mind wander: · Corrinne let her mind wander back to the days when they first met.
someone who is inattentive does not pay attention to something when they are expected to: · Roger was hyperactive and inattentive as a child.· In spite of the inattentive servers and the bad decor, it's worth eating at Leon's for the great cheap food. inattentive to: · The government is still being accused of being inattentive to the plight of the Health Service.
if you lose your concentration , you stop being able to think carefully about what you are doing, for example because you are suddenly interrupted: · Sensing that the team was losing their concentration, Barret called a time out.· With too much homework, children may lose concentration and stop progressing.
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 ENTRYverbs A single lapse of concentration cost Sampras the game. Most two-year-olds have a very short attention span.COLLOCATIONS FROM THE CORPUSADJECTIVE
(=needs concentration)· Playing a musical instrument takes a lot of concentration.
formal· Writing an exam requires great concentration.
· Halfway through the game, he seemed to lose concentration.
(=stop someone concentrating)· The telephone rang and broke my concentration.
· She slipped out of the room, trying not to disturb his concentration.
phrases (=someone’s ability to concentrate hard)· Great athletes are known for their powers of concentration.
· A lack of concentration when you are driving can be fatal.
(=a short time when you do not concentrate)· That brief lapse of concentration resulted in a goal for the other team.
adjectives· My work demands great concentration.
· The boy had behavioural problems and suffered from poor concentration.
· I was impressed by her total concentration on the game.
(=very great concentration)· The job demands intense concentration.
concentration + NOUN (=the length of time that you are able to concentrate)· Young children have a short concentration span.
COLLOCATIONS FROM OTHER ENTRIES· I couldn't work with the kids around disturbing my concentration.
A single lapse of concentration cost Sampras the game.· As you get older, your powers of concentration may decrease.
Most two-year-olds have a very short attention span.· Non-specifically bound polymerase was removed by the addition of heparin to a final concentration of 400 µg/ml.
· In many ways the most powerful impetus to greater concentrations came from the state.· The greater the glucose concentration in the plasma, the greater the number of hemoglobin molecules that will become glycosylated.· Losses in speed and agility are compensated by greater experience, concentration and motivation.· The reason for the greater total lipid concentration in cholesterol gall stone patients is not clear at present.· This Massiliot sphere of influence happens to correspond to those areas where the greatest concentration of Black Virgins is to be found.· It takes great concentration on their part, and for weeks ahead their Teacher Phyl Bailey carefully guides them through rehearsals.· I had to use great concentration and all of the strength that I had to reach up and scratch my nose.
· These agents are toxic when given systemically, and so producing them at high concentration within the tumour is an attractive goal.· But the atmospheres of the Jovian planets contain astronomical amounts, and high concentrations, of both helium-3 and deuterium.· Would firms move into areas with high radon concentrations?· Higher-educated immigrants were less likely to resettle in states with high immigrant concentrations, the study found.· There is evidence that ascorbic acid is secreted in high concentrations into the normal stomach.· There was concern that such a high concentration would be too difficult to digest or lead to side effects.· However, higher concentrations were shown to produce haemolysis.· Use long-life electric bulbs in places that do not require a high concentration of light, such as hallways and closets.
· A dimension of increased decision-making concentration which has attracted particular notice concerns the effects on regional diversity and development.· The significantly lower plasminogen activator activity of malignant ascites is associated with greatly increased concentrations of plasminogen activator inhibitor-1.· Nevertheless, we propose that the increased concentration of bile acids and increased daily excretion may predispose to the development of polyps.· The increased concentration and urokinase in malignant tissues may partly explain the finding of increased concentrations of urokinase in malignant ascites.· Any increased concentration among defence suppliers will depend crucially on the attitudes of individual governments.· The workforce in distribution began to decline with increased concentration in retailing, rationalisation and the development of larger stores.· The role of the increased serum gastrin concentration induced by H pylori in the pathogenesis of duodenal ulcer disease is also unknown.
· Surrounded on three sides by railway, it is not suitable for housing because of the large concentration of industry around that area.· Gee, sorry, seems about all we have left is miles from the largest concentrations of buyers.· Neuropeptide Y has also been isolated from the gastrointestinal tract with large concentrations found in the biliary tree.· And five are in Phoenix, the largest concentration anywhere.· The largest concentration of departments is found in the George Square/Old College area.· Absentee landlords and large concentrations of landholdings were virtually eliminated.· East London was especially fortunate due to proximity to the largest concentration of wealth in the country, the remainder of London.· The region also has one of the largest concentrations of wildlife in the world.
· It can be seen that human sweat is actually hypotonic ie it contains a lower salt concentration than the plasma.· In the rat cerebral cortex in the absence of calmodulin, calcium has a negligible effect at low concentrations.· Rinse additives tend to be very expensive but are used in very low concentrations and are invariably mechanically dosed.· An upward shift would be produced by changing to a new standard at a lower concentration than that required for the test.· We also found lower concentrations in smokers although this did not reach significance.· It is First Alert that has targeted low concentrations and caused most of the nuisance alarms, he said.· HYPOKALEMlA A low plasma potassium concentration is not always accompanied by a deficit in total body potassium.
· Simultaneously, sedimentation occurred at the base, as in previous experiments, so the mean concentration decreased with time.· The mean total cholesterol concentration among women with polyps was significantly higher than that of control subjects.· We chose linear regression for describing the overall changes in mean sperm concentrations, but other statistical models have also been tested.· There were no significant differences in the mean albumin concentrations between the first and second visits and the first and third visits.
· In this study, a significantly greater total lipid concentration was found in the hepatic bile of cholesterol gall stone patients.· From the latter part of 1927 through the first half of 1928, I lived in a cocoon of total concentration.· The reason for the greater total lipid concentration in cholesterol gall stone patients is not clear at present.· There is a deep total and gentle concentration on what is going on in the body and in the breathing.· To meet these standards the worker needs total concentration and freedom from time pressure.· Everything I do in future I will tackle with total concentration and self-assurance, and I will do it well.· T m measurements were made using total single strand concentrations of 18 and 8µM for duplexes 1 and 4 respectively.· So, supposing I tried, the task would demand total concentration.
NOUN· This was coupled with an increased faecal bile acid concentration and proportion of secondary faecal bile acids.· Supplementary dietary phosphate decreased the fatty acid concentration only on the low calcium diet.· The bile acid concentration in faecal water also decreased with increasing dietary calcium, and this was not influenced by dietary phosphate.· An extensive nutritional screen was performed, including measurements of blood mineral, vitamin, and fatty acid concentrations.· Total bile acid concentration was calculated as the sum of all gas liquid chromatography detected individual bile acids.· A reduced short chain fatty acid concentration has also been reported in pouch contents from patients with pouchitis compared with those without.· In contrast to fatty acids, the total bile acid concentration was hardly influenced by the different diets.· The oleic acid concentrations used are in the range encountered in patients with steatorrhea.
· Anybody who was in a concentration camp as a guard could use that argument.· There were the political prisoners, sent to concentration camps, who continued to help the Allies.· He can defend us, can separate us from the past, from the concentration camps and lost wars.· When he spoke of liberating the concentration camps, he assigned himself a place among the liberators.· One character is in the Resistance, another witnesses Hiroshima, another goes to a concentration camp, others stay at home.· At least seven died in concentration camps, Williams says.· And we kept another hundred and twenty thousand between 1945 and 1954 in Hitler's old concentration camps.· I felt like a guard in a concentration camp.
· Serum gastrin concentrations did not correlate well with changes in the endocrine cell density.· Helicobacter pylori increases plasma gastrin concentrations by 50% to 100% and values fall to normal after the organism has been eradicated.· Hence, many of these patients may actually have supramaximal gastrin concentrations.· They found that patients with the highest serum gastrin concentrations did not necessarily have the highest enterochromaffin like cell counts.· Similarly, basal serum gastrin concentrations do not alter with ageing in healthy men.· The finding of enhanced fasting gastrin concentrations in H pylori positive subjects and in duodenal ulcer disease can not easily be explained.· The plasma gastrin concentrations increased from group to group as expected from the dose given.· At this time the basal and meal stimulated gastrin concentrations were reassessed as described above.
· Risk of death increased with increasing blood glucose concentrations.· The greater the glucose concentration in the plasma, the greater the number of hemoglobin molecules that will become glycosylated.· Plasma glucose concentrations did not differ between the two groups.· As glucose concentration falls, severe volume depletion may be unmasked.· Figure 1 shows mean serum glucose concentrations reached during clamping.· Recently several studies have emphasised the importance of serum glucose concentrations in the regulation of gastrointestinal function.· When audits have gone beyond counting activity alone they have focused mainly on blood glucose concentration as a proxy measure of outcome.· Neither the size of the responses nor the glucose concentration at which they began during stepped slow fall hypoglycaemia was different.
· They had all had a normal haemoglobin concentration.· Our management included a measurement of haemoglobin concentration and the treatment of any identified anaemia.· A positive correlation was found between glycosylated haemoglobin concentration and the prostacyclin concentration necessary to inhibit ADP-induced platelet aggregation by 50 percent.
· Here we present observations of a large summer minimum in ozone concentration in the unpolluted marine boundary layer of the Southern Hemisphere.· Initial ozone concentrations were taken from a mid-December climatology.
· Its usefulness in this disease has been questioned, and a maximum efficacy was obtained in one report at lower plasma concentrations.· The results of gastric juice against plasma concentrations according to H pylori status are shown in Figure 3.· The acute phase response also involves changes in the plasma concentrations of a number of liver synthesised proteins.
· Proton concentrations for each sample were then calculated from the hydrogen ion activity and the combined sodium and potassium concentrations.· This is effective not because it lowers serum potassium concentration but because it directly antagonizes the membrane depolarizing effect of hyperkalemia.· The electrocardiogram provides a graphic indication of the membrane effects of altered potassium concentrations.· HYPOKALEMlA A low plasma potassium concentration is not always accompanied by a deficit in total body potassium.· Occasionally, a substantially increased platelet or white cell count may lead to apparent increases in plasma potassium concentration.· What is actually observed in this Circumstance is an increase in serum potassium concentration.· As a result, extracellular potassium concentration decreases.· This causes an increase in extracellular potassium concentration.
· Biliary protein concentration was similar between the two groups.· The binding is reversible so that factors that decrease the protein concentration will increase the ionized fraction of calcium in the blood.· Cholesterol nucleation time, biliary lipid concentration, vesicular cholesterol distribution, and biliary protein concentration were measured and compared.· The total protein concentration did not differ between the two groups as shown by Yamazaki etal.· The nucleation time did not correlate with either total lipid concentration or total protein concentration.· All lysosomal enzyme assays were linear with respect to time and protein concentration.· Tissue protein concentrations were determined by the method of Lowry etal.· The oedematous patients had similar lung function, smoking histories, and plasma protein concentrations to the patients without oedema.
· All patients had normal serum concentrations of liver enzymes and bilirubin and were included consecutively in the study.· This results, even in steady state, in a rapid decline in serum concentrations.· Integrated meal stimulated serum gastrin outputs were determined by calculating the area under the serum concentration time curve.· The serum concentration of IGF-I and growth velocity both improved with increased calorie intake.· We also made it clear that both dose and frequency should be adjusted as dictated by serum concentrations.· Certain IgG heavy chain markers are associated with the serum concentrations of IgG subclasses.· Several studies have disclosed relations between IgG markers and IgG subclass serum concentrations against particular antigens.· Alpha-1 antitrypsin deficiency and Wilson disease were excluded by determining serum concentrations of alpha-1 antitrypsin and ceruloplasmin, respectively.
· Duodenogastric reflux was identified when intragastric sodium concentrations exceeded 50 mmol/l.· Extracellular osmolal concentration is approximately twice the sodium concentration.· Duodenogastric reflux is indicated when sodium concentrations rise above 50 mmol/l.· A significant difference between plasma sodium concentration and tonicity can thus occur.· Measurement of sodium concentrations is simple to perform and offers the possibility of prolonged continuous monitoring.· A high urine sodium concentration is a variable but frequent confirmatory finding in this disorder.· Furthermore, restricting intraluminal sodium concentration in jejunal perfusion does not seem to limit glucose absorption.· Serum sodium concentration or tonicity are functions of water content relative to total body sodium content.
VERB· His remarkable doggedness led him to carry on regardless when two stink bombs broke everyone else's concentration.· It broke Woosnam's concentration and also impaired his confidence.· It broke the concentration of my players and led them into serious defensive errors.· And when I was throwing my rackets and talking to the umpire it was breaking my concentration.
· A horse's sweat is hypertonic ie it contains a higher concentration of salts than the plasma from which it is derived.· In general, lunar rocks differ from terrestrial rocks in that the Moon contains much lower concentrations of easily vaporized elements.· It can be seen that human sweat is actually hypotonic ie it contains a lower salt concentration than the plasma.· Further, soft coal sometimes contains dangerous concentrations of toxic materials such as arsenic, antimony, and cadmium.· Pancreatic juice for example contains a high concentration of sodium ions, and variable concentrations of chloride and bicarbonate ions.· It does contain shocking footage of concentration camps.· The Dead Sea waters contain a high concentration of salts composed of potassium, bromine and magnesium as well as other minerals.· The disease, however, may be triggered in moles containing unusually high concentrations of melanin.
· We subsequently determined the soluble faecal concentrations of calcium, phosphate, fatty acids, and bile acids.· We measured circulating gastrin to determine the concentrations of gastrin required to produce half maximal acid secretion.
· I found a concentration of priming fish one morning and dropped baits in amongst them.· If you find the concentration more than your risk tolerance allows, look for a value fund or one in another sector.· We also found lower concentrations in smokers although this did not reach significance.· Meanwhile the monstrous and unmanageable dreams about Sethe found release in the concentration Denver began to fix on the baby ghost.· Discovery of Stalinist victims' graves During March a number of mass graves were found near former concentration camps or prisoner-of-war camps.· The study also found that the concentration of immigrants has increased over the past quarter-century.
· Helicobacter pylori increases plasma gastrin concentrations by 50% to 100% and values fall to normal after the organism has been eradicated.· The increased saturation is due to the increased iron concentration in the serum.· Risk of death increased with increasing blood glucose concentrations.· Therefore, the jaundice is caused by an increased concentration of unconjugated bilirubin.· It should be pointed out that despite increasing income concentration, there has been a general improvement in the quality of life.· So it seems that Ras can be activated by merely increasing the total cellular concentration of activator, without requiring receptor-dependent modification.· There are, in our society, increasing limits on the concentration of power.· Cholesterol was added to increase the intestinal concentration of bile acids, because dietary cholesterol stimulates bile acid synthesis in rats.
· But seeing Damien made her lose concentration and before she knew what was happening she found herself boxed in yet again.· We go for a while, then we lose concentration and focus.· She lost concentration, and the pygmy vanished.· And each time the child has to make a new conscious effort like that, there is an opportunity to lose concentration.· They lost concentration at times with a big lead behind them.· There was a danger he'd lose his concentration if too much warmth built up.· Once, for an instant, she lost her concentration and a smile cracked across her features.
· Bile salt and peptides were measured in molar concentrations.· For clinical purposes, one means of measuring overall concentration would be to measure the serum osmolality directly.
· Crusting for chub is an art that requires concentration and constant attention to the performance.· Such mastery requires absolute concentration, the full deployment of oneself.· And it also had the benefit of requiring very little concentration, leaving her thoughts free to roam.· It required some concentration to pick up the coffee cups and carry them out to the kitchen.· Analytical reading requires good levels of concentration, however.· Use long-life electric bulbs in places that do not require a high concentration of light, such as hallways and closets.· It required enormous concentration and a lot of physical changes - each one accompanied by different music.· Flying an aircraft requires great concentration when landing or taking off.
· He would listen in, showing more powers of concentration than he ever did at work.· This proprietary blend shows tremendous depth and concentration, with generous blackberry fruit and hints of chocolate and blueberry.· The short report included a table showing the concentration of streptomycin which stopped the growth of various organisms.· But later in the day, a detailed analysis showed the concentrations to be safe.· Kirschner etal, on the other hand, showed low serum IGF-I concentrations in children with Crohn's disease.· Early reports showed reduced concentrations of IgM, but later studies showed normal or even raised immunoglobulin concentrations.· Early studies by Cooke showed that ethanol in concentrations of 1% to 20% did not stimulate gastric acid secretion.
PHRASES FROM OTHER ENTRIES
- I never listen to music when I'm working - it breaks my concentration.
- I forced myself to open my fingers, to relax my vigilance, to fall asleep.
- Once they lose those bright feathers they can afford to relax their vigilance.
- Take care not to relax your concentration on the way up. 2.
WORD FAMILYnounconcentrationadjectiveconcentratedverbconcentrate
1[uncountable] the ability to think about something carefully or for a long time: She needed all her powers of concentration to stop herself from slipping on the icy road. Lack of concentration was a real problem. I lost my concentration and fell asleep.2[uncountable] a process in which you put a lot of attention, energy etc into a particular activityconcentration on (doing) something concentration on your health concentration on providing value and service3[countable, uncountable] a large amount of something in a particular place or among particular peopleconcentration of the concentration of greenhouse gases in the atmosphere the concentration of power in the hands of a few4[countable] technical the amount of a substance contained in a liquidhigh/low concentrations Additives are expensive but are used in very low concentrations.concentration of allowable concentrations of pesticides in drinking waterCOLLOCATIONSverbssomething takes concentration (=needs concentration)· Playing a musical instrument takes a lot of concentration.something requires/demands concentration formal· Writing an exam requires great concentration.lose (your) concentration· Halfway through the game, he seemed to lose concentration.break somebody’s concentration (=stop someone concentrating)· The telephone rang and broke my concentration.disturb somebody’s concentration· She slipped out of the room, trying not to disturb his concentration.phrasessomebody’s powers of concentration (=someone’s ability to concentrate hard)· Great athletes are known for their powers of concentration.a lack of concentration· A lack of concentration when you are driving can be fatal.a lapse in/of concentration (=a short time when you do not concentrate)· That brief lapse of concentration resulted in a goal for the other team.adjectivesgreat/deep concentration· My work demands great concentration.poor concentration· The boy had behavioural problems and suffered from poor concentration.total concentration· I was impressed by her total concentration on the game.intense concentration (=very great concentration)· The job demands intense concentration.concentration + NOUNa concentration span (=the length of time that you are able to concentrate)· Young children have a short concentration span.- cent
- centaur
- centenarian
- centenary
- center
- Center Parcs
- Centers for Disease Control
- centi-
- Centigrade
- centilitre
- centime
- centimetre
- centipede
- central
- -central
- Central African Republic
- Central America
- central bank
- central casting
- Central Criminal Court
- central government
- central heating
- Central Intelligence Agency
- centralism
- centrality