英语词汇“atom”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

WORD ORIGINatom

Origin:

1500-1600 Latin atomus, from Greek, from atomos ‘that cannot be divided’, from temnein ‘to cut’

EXAMPLES FROM OTHER DICTIONARIES

an atom of truth

EXAMPLES FROM THE CORPUS

In graphite the carbon atoms are arranged in flat hexagons layered on top of each other.
Quarks unite to form protons, neutrons and electrons, which in turn unite to form atoms.
Talk of probability waves and eigen values does not undermine the reality of atoms and molecules.
The formula also shows the number of moles of atoms of each element in one mole of molecules.
The valency of an atom in a covalent molecule is the number of electrons shared by the atom in forming the bond.

WORD SETS► Physics

aether, nounamplitude, nounantimatter, nounantiparticle, nounastrophysics, nounatom, nounatomic, adjectiveattract, verbattraction, nounballistics, nounbeam, nounblack hole, nounbuoyancy, nouncalorie, nouncalorific, adjectivecapillary action, nouncathode ray tube, nouncentre of gravity, nouncentrifugal force, nouncentrifuge, nouncentripetal force, nounchain reaction, nouncondensation, nounconduct, verbconduction, nounconductive, adjectiveconductor, nounconvect, verbconvection, nouncore, nouncritical mass, noundemagnetize, verbdense, adjectivedensity, noundisplacement, noundynamic, adjectiveelectron, nounelementary particle, nounfallout, nounfissile, adjectivefission, nounfocus, verbfrequency, nounfriction, nounfusion, noungamma ray, noungravitation, noungravitational, adjectivegravity, nounhalf-life, nounhertz, nounhydraulic, adjectiveHz, imaging, nounimpetus, nouninertia, nouninvariable, adjectiveion, nounionize, verbkinetic, adjectivelaser, nounlift, nounliquefaction, nounliquefy, verblodestone, nounmagnet, nounmagnetic, adjectivemagnetic field, nounmagnetism, nounmagnetize, verbmass, nounmechanical, adjectivemedium, nounmeltdown, nounmomentum, nounmotive, adjectivemushroom cloud, nounnatural philosophy, nounneutron, nounNewtonian, adjectivenuclear, adjectivenuclear fission, nounnuclear fusion, nounnuclear physics, nounnuclear reactor, nounnucleus, nounoptical fibre, nounparticle accelerator, nounparticle physics, nounphonic, adjectivephosphorescence, nounphosphorescent, adjectivephoto-, prefixphoton, nounphotosensitive, adjectivephotosensitize, verbphysical, adjectivephysicist, nounphysics, nounpivot, nounpolar, adjectivepole, nounpotential energy, nounpower, nounpressure, nounpropulsion, nounproton, nounpull, nounquantum mechanics, nounquantum theory, nounquark, nounradiate, verbradiation, nounradio wave, nounray, nounreaction, nounreactor, nounreflect, verbreflector, nounrefract, verbrelativity, nounrepel, verbrepulsion, nounrepulsive, adjectiveresilience, nounresilient, adjectiveresistance, nounresonance, nounretention, nounsolid-state, adjectivesonic, adjectivesonic boom, nounsound wave, nounspace, nounspecific gravity, nounspectral, adjectivespectroscope, nounspectrum, nounstatics, nounsteady state theory, nounstrain, nounstress, nounsurface tension, nountension, nounthermodynamics, nounthrust, nountraction, nountrajectory, nountransmit, verbultrasonic, adjectiveultrasound, nounvacuum, nounvaporize, verbvapour, nounvector, nounwave, nounwavelength, nounwork, noun

COLLOCATIONS FROM OTHER ENTRIES► an atom/atomic bomb

· Oppenheimer was the father of the atomic bomb.

► a chain of atoms/molecules etc

technical:· Most fabrics are made of long chains of molecules.

COLLOCATIONS FROM THE CORPUSADJECTIVE► other

· In other cases atoms take the place of ions in regular lattice positions.· Most other atoms can join up comfortably only with one, two, or three others at a time.

► single

· In crystallography, each lattice point can accommodate more than a single atom.· And the amount the tip is moved reveals the height of the protuberance, even if it is only a single atom high.· The detection of single atoms in this way has caused great excitement because of its application in many areas.· By the time it hits a distant screen, this ion-image has expanded millions of times. Single atoms can be resolved.· In other words, only certain discrete energies would be permitted, exactly as for an electron confined in a single atom.· Dalton never saw an atom, or the effects of a single atom.· A single atom of copper is still a piece of copper.· It is formed when the sun's ultraviolet radiation breaks up the two atoms of oxygen molecules into single atoms.

► small

· We could detonate a very small atom bomb in the vicinity of another.· Even a charge of conventional explosive in the vicinity of a small atom bomb would suffice.· If the small atom bomb went up, so then would the hydrogen bomb.· However, on the small scales of atoms and molecules, electromagnetic forces dominate.· Pretty small for an atom bomb, I would have thought. 4000 kilotons.· When small atoms bond together through ionic or covalent chemical bonds, the compactness of the bond makes it extremely strong.· Carbon is the smallest atom in the fourth column of the periodic table of elements.

NOUN► bomb

· We could detonate a very small atom bomb in the vicinity of another.· A fart is not an atom bomb....· Even a charge of conventional explosive in the vicinity of a small atom bomb would suffice.· If the small atom bomb went up, so then would the hydrogen bomb.· Teller, of course, worked on the atom bomb and the H-bomb.· Britain has already accumulated enough nuclear waste to build 5,000 atom bombs.· Then war intervened, Oppenheimer became involved in the atom bomb project, and he lost interest in gravitational collapse.

► carbon

· Buckyballs, of buckminsterfullerene, are soccer-ball-shaped assemblages of 60 carbon atoms.· Any molecule with this group attached to a carbon atom is called an alcohol.· The two substances differ from each other only in the geometric pattern with which the carbon atoms are packed.· In this group of ions the carbon atom is surrounded by three oxygen atoms in a planar triangle.· In diamonds, the carbon atoms are packed in a tetrahedral pattern which is extremely stable.· The hydrogen-to-carbon atom ratio is perhaps a better index.· This leaves one electron on each carbon atom unaccounted for.· This is illustrated in Figure 4. 2 which shows the hydrogen-to-carbon atom ratio of various hydrocarbon.

► hydrogen

· By supplying addition molecules of chlorine it is possible to replace all the hydrogen atoms.· The optimum proportions of hydrogen and oxygen are thus two hydrogen atoms per oxygen atom, exactly the same as in water.· This is about the energy that would be released if a hydrogen atom could be totally converted into energy.· A methyl group is a carbon with three hydrogen atoms attached.· One of the hydrogen atoms in ammonia is replaced by a benzene ring.· Instantly, one of the hydrogen atoms on the ethanol molecule is ripped off.· It consists of a chain of carbon atoms, with one hydrogen atom attached to each carbon.· The microcosm becomes the macrocosm: the key to the whole universe may well be hidden in one hydrogen atom.

► oxygen

· Thus, in our example, no magnesium, carbon or oxygen atoms can be created or destroyed.· In this group of ions the carbon atom is surrounded by three oxygen atoms in a planar triangle.· The clays consist of silica tetrahedra and the octahedra contain magnesia surrounded by oxygen atoms and hydroxyl groups.· Is there a molecule that weighs the same as an oxygen atom?

VERB► charge

· That instrument was designed to produce a beam of electrically charged atoms from the sample to be studied.· The electrical charge used by neurons is carried by ions-those electrically charged atoms mentioned previously.

► contain

· For example, one molecule of oxygen contains two atoms of oxygen.· One molecule of ammonia contains one atom of nitrogen and three atoms of hydrogen.· Each contains five atoms, giving nine normal vibrations.

► form

· Nor would these, together with electrons, form separate, well-defined atoms.· Quarks unite to form protons, neutrons and electrons, which in turn unite to form atoms.· The sub-atomic particles are arranged to form the atoms, and different numbers, types and arrangements of atoms form the molecules.· If the recoiled atom is directed towards a neighbouring atom, a blocking cone is formed behind the neighbouring atom.· Negative ions can also be formed when an atom has an extra electron bolted on.

► show

· Then J.J. Thomson showed that these atoms of charge exist; we call them electrons.· They are named after the man who inferred their existence from weak attractive forces shown by atoms and molecules in gases.· A formula of an ion shows the ratio of atoms of each element present in the ion.

单词	atom
释义	atomat‧om /ˈætəm/ ●●○ noun [countable] Word Origin WORD ORIGINatom Origin: 1500-1600 Latin atomus, from Greek, from atomos ‘that cannot be divided’, from temnein ‘to cut’ Examples EXAMPLES FROM OTHER DICTIONARIES an atom of truth EXAMPLES FROM THE CORPUS In graphite the carbon atoms are arranged in flat hexagons layered on top of each other. Quarks unite to form protons, neutrons and electrons, which in turn unite to form atoms. Talk of probability waves and eigen values does not undermine the reality of atoms and molecules. The formula also shows the number of moles of atoms of each element in one mole of molecules. The valency of an atom in a covalent molecule is the number of electrons shared by the atom in forming the bond. word sets WORD SETS► Physics aether, nounamplitude, nounantimatter, nounantiparticle, nounastrophysics, nounatom, nounatomic, adjectiveattract, verbattraction, nounballistics, nounbeam, nounblack hole, nounbuoyancy, nouncalorie, nouncalorific, adjectivecapillary action, nouncathode ray tube, nouncentre of gravity, nouncentrifugal force, nouncentrifuge, nouncentripetal force, nounchain reaction, nouncondensation, nounconduct, verbconduction, nounconductive, adjectiveconductor, nounconvect, verbconvection, nouncore, nouncritical mass, noundemagnetize, verbdense, adjectivedensity, noundisplacement, noundynamic, adjectiveelectron, nounelementary particle, nounfallout, nounfissile, adjectivefission, nounfocus, verbfrequency, nounfriction, nounfusion, noungamma ray, noungravitation, noungravitational, adjectivegravity, nounhalf-life, nounhertz, nounhydraulic, adjectiveHz, imaging, nounimpetus, nouninertia, nouninvariable, adjectiveion, nounionize, verbkinetic, adjectivelaser, nounlift, nounliquefaction, nounliquefy, verblodestone, nounmagnet, nounmagnetic, adjectivemagnetic field, nounmagnetism, nounmagnetize, verbmass, nounmechanical, adjectivemedium, nounmeltdown, nounmomentum, nounmotive, adjectivemushroom cloud, nounnatural philosophy, nounneutron, nounNewtonian, adjectivenuclear, adjectivenuclear fission, nounnuclear fusion, nounnuclear physics, nounnuclear reactor, nounnucleus, nounoptical fibre, nounparticle accelerator, nounparticle physics, nounphonic, adjectivephosphorescence, nounphosphorescent, adjectivephoto-, prefixphoton, nounphotosensitive, adjectivephotosensitize, verbphysical, adjectivephysicist, nounphysics, nounpivot, nounpolar, adjectivepole, nounpotential energy, nounpower, nounpressure, nounpropulsion, nounproton, nounpull, nounquantum mechanics, nounquantum theory, nounquark, nounradiate, verbradiation, nounradio wave, nounray, nounreaction, nounreactor, nounreflect, verbreflector, nounrefract, verbrelativity, nounrepel, verbrepulsion, nounrepulsive, adjectiveresilience, nounresilient, adjectiveresistance, nounresonance, nounretention, nounsolid-state, adjectivesonic, adjectivesonic boom, nounsound wave, nounspace, nounspecific gravity, nounspectral, adjectivespectroscope, nounspectrum, nounstatics, nounsteady state theory, nounstrain, nounstress, nounsurface tension, nountension, nounthermodynamics, nounthrust, nountraction, nountrajectory, nountransmit, verbultrasonic, adjectiveultrasound, nounvacuum, nounvaporize, verbvapour, nounvector, nounwave, nounwavelength, nounwork, noun Collocations COLLOCATIONS FROM OTHER ENTRIES► an atom/atomic bomb · Oppenheimer was the father of the atomic bomb. ► a chain of atoms/molecules etc technical:· Most fabrics are made of long chains of molecules. COLLOCATIONS FROM THE CORPUSADJECTIVE► other · In other cases atoms take the place of ions in regular lattice positions.· Most other atoms can join up comfortably only with one, two, or three others at a time. ► single · In crystallography, each lattice point can accommodate more than a single atom.· And the amount the tip is moved reveals the height of the protuberance, even if it is only a single atom high.· The detection of single atoms in this way has caused great excitement because of its application in many areas.· By the time it hits a distant screen, this ion-image has expanded millions of times. Single atoms can be resolved.· In other words, only certain discrete energies would be permitted, exactly as for an electron confined in a single atom.· Dalton never saw an atom, or the effects of a single atom.· A single atom of copper is still a piece of copper.· It is formed when the sun's ultraviolet radiation breaks up the two atoms of oxygen molecules into single atoms. ► small · We could detonate a very small atom bomb in the vicinity of another.· Even a charge of conventional explosive in the vicinity of a small atom bomb would suffice.· If the small atom bomb went up, so then would the hydrogen bomb.· However, on the small scales of atoms and molecules, electromagnetic forces dominate.· Pretty small for an atom bomb, I would have thought. 4000 kilotons.· When small atoms bond together through ionic or covalent chemical bonds, the compactness of the bond makes it extremely strong.· Carbon is the smallest atom in the fourth column of the periodic table of elements. NOUN► bomb · We could detonate a very small atom bomb in the vicinity of another.· A fart is not an atom bomb....· Even a charge of conventional explosive in the vicinity of a small atom bomb would suffice.· If the small atom bomb went up, so then would the hydrogen bomb.· Teller, of course, worked on the atom bomb and the H-bomb.· Britain has already accumulated enough nuclear waste to build 5,000 atom bombs.· Then war intervened, Oppenheimer became involved in the atom bomb project, and he lost interest in gravitational collapse. ► carbon · Buckyballs, of buckminsterfullerene, are soccer-ball-shaped assemblages of 60 carbon atoms.· Any molecule with this group attached to a carbon atom is called an alcohol.· The two substances differ from each other only in the geometric pattern with which the carbon atoms are packed.· In this group of ions the carbon atom is surrounded by three oxygen atoms in a planar triangle.· In diamonds, the carbon atoms are packed in a tetrahedral pattern which is extremely stable.· The hydrogen-to-carbon atom ratio is perhaps a better index.· This leaves one electron on each carbon atom unaccounted for.· This is illustrated in Figure 4. 2 which shows the hydrogen-to-carbon atom ratio of various hydrocarbon. ► hydrogen · By supplying addition molecules of chlorine it is possible to replace all the hydrogen atoms.· The optimum proportions of hydrogen and oxygen are thus two hydrogen atoms per oxygen atom, exactly the same as in water.· This is about the energy that would be released if a hydrogen atom could be totally converted into energy.· A methyl group is a carbon with three hydrogen atoms attached.· One of the hydrogen atoms in ammonia is replaced by a benzene ring.· Instantly, one of the hydrogen atoms on the ethanol molecule is ripped off.· It consists of a chain of carbon atoms, with one hydrogen atom attached to each carbon.· The microcosm becomes the macrocosm: the key to the whole universe may well be hidden in one hydrogen atom. ► oxygen · Thus, in our example, no magnesium, carbon or oxygen atoms can be created or destroyed.· In this group of ions the carbon atom is surrounded by three oxygen atoms in a planar triangle.· The clays consist of silica tetrahedra and the octahedra contain magnesia surrounded by oxygen atoms and hydroxyl groups.· Is there a molecule that weighs the same as an oxygen atom? VERB► charge · That instrument was designed to produce a beam of electrically charged atoms from the sample to be studied.· The electrical charge used by neurons is carried by ions-those electrically charged atoms mentioned previously. ► contain · For example, one molecule of oxygen contains two atoms of oxygen.· One molecule of ammonia contains one atom of nitrogen and three atoms of hydrogen.· Each contains five atoms, giving nine normal vibrations. ► form · Nor would these, together with electrons, form separate, well-defined atoms.· Quarks unite to form protons, neutrons and electrons, which in turn unite to form atoms.· The sub-atomic particles are arranged to form the atoms, and different numbers, types and arrangements of atoms form the molecules.· If the recoiled atom is directed towards a neighbouring atom, a blocking cone is formed behind the neighbouring atom.· Negative ions can also be formed when an atom has an extra electron bolted on. ► show · Then J.J. Thomson showed that these atoms of charge exist; we call them electrons.· They are named after the man who inferred their existence from weak attractive forces shown by atoms and molecules in gases.· A formula of an ion shows the ratio of atoms of each element present in the ion. 1the smallest part of an element that can exist alone or can combine with other substances to form a molecule: carbon atomsatom of two atoms of hydrogen2a very small amount of something – used for emphasisatom of There isn’t an atom of truth in it.
随便看	testing testing ground testis test match testosterone test pilot test run test tube test-tube baby testy tetanus tetchily tetchiness tetchy tether tetra- tetrakaidecahedron Teutonic Texaco Texan Texas Texas Rangers Tex-Mex text textbook