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atom    音标拼音: ['ætəm]
n. 原子;微粒,微量

原子;微粒,微量

atom
原子; 单元


atom
原子

atom
原子 基元

atom
n 1: (physics and chemistry) the smallest component of an
element having the chemical properties of the element
2: (nontechnical usage) a tiny piece of anything [synonym: {atom},
{molecule}, {particle}, {corpuscle}, {mote}, {speck}]

Atom \At"om\, n. [L. atomus, Gr. ?, uncut, indivisible; 'a priv.
?, verbal adj. of ? to cut: cf. F. atome. See {Tome}.]
1. (Physics)
(a) An ultimate indivisible particle of matter.
(b) An ultimate particle of matter not necessarily
indivisible; a molecule.
(c) A constituent particle of matter, or a molecule
supposed to be made up of subordinate particles.
[1913 Webster]

Note: These three definitions correspond to different views
of the nature of the ultimate particles of matter. In
the case of the last two, the particles are more
correctly called molecules. --Dana.
[1913 Webster]

2. (Chem.) The smallest particle of matter that can enter
into combination; one of the elementary constituents of a
molecule.
[1913 Webster]

3. Anything extremely small; a particle; a whit.
[1913 Webster]

There was not an atom of water. --Sir J. Ross.
[1913 Webster]


Atom \At"om\, v. t.
To reduce to atoms. [Obs.] --Feltham.
[1913 Webster] Atom bomb

175 Moby Thesaurus words for "atom":
Bohr atom, Dirac atom, I, Lewis-Langmuir atom, Thomson atom, ace,
acid, acidity, agent, air, alkali, alkalinity, alloisomer, anion,
antacid, atomic model, atomic particles, atoms, base, biochemical,
bit, brute matter, building block, cation, chemical,
chemical element, chromoisomer, component, compound, constituent,
copolymer, cubical atom, dab, dash, dimer, dole, dot, dram,
dribble, driblet, dwarf, dyad, earth, electron, element,
elementary particle, elementary unit, fabric, farthing, fire,
fleck, flyspeck, fragment, fundamental particle, gobbet, grain,
granule, groat, hair, handful, heavy chemicals, heptad, hexad,
high polymer, homopolymer, hydracid, hyle, hypostasis,
inorganic chemical, ion, iota, isobar, isomer, isotopic isobar,
jot, labeled atom, little, little bit, lota, macromolecule,
material, material world, materiality, matter, medium, meson,
metamer, minim, minimum, minutiae, mite, modicum, molecule, monad,
monomer, mote, natural world, nature, neutral atom, neutralizer,
no other, nonacid, none else, normal atom, nothing else,
nought beside, nuclear atom, nuclear isomer, nuclear particle,
nuclide, nutshell, octad, one, one and only, organic chemical,
ounce, oxyacid, particle, pebble, pentad, physical world, pinch,
pittance, planetary shell, plenum, point, polymer, proton,
pseudoisomer, quark, radiation atom, radical, reagent, recoil atom,
scruple, shade, shell, smack, smidgen, smitch, soupcon, speck,
spice, spoonful, spot, stripped atom, stuff, subshell, substance,
substratum, suggestion, sulfacid, suspicion, tagged atom, tangible,
tetrad, the four elements, thimbleful, tincture, tinge, tiny bit,
tittle, touch, trace, tracer, tracer atom, triad, trifling amount,
trimer, trivia, unit, unit of being, valence shell, water, whit


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  • Atom - Wikipedia
    Though the word atom originally denoted a particle that cannot be cut into smaller particles, in modern scientific usage the atom is composed of various subatomic particles
  • Atom
    Atom is a desktop application built with HTML, JavaScript, CSS, and Node js integration It runs on Electron, a framework for building cross platform apps using web technologies Atom is open source Be part of the Atom community or help improve your favorite text editor
  • Atom | Definition, Structure, History, Examples, Diagram, Facts . . .
    What is an atom? An atom is the basic building block of chemistry It is the smallest unit into which matter can be divided without the release of electrically charged particles It also is the smallest unit of matter that has the characteristic properties of a chemical element
  • What Is an Atom? Atom Definition - Science Notes and Projects
    An atom is the basic building block of matter, consisting of protons, neutrons, and electrons An atom is the smallest unit of matter that forms a chemical element and cannot be divided using any chemical means
  • Atom: Definition, Structure, Parts with Labeled Diagram
    What is an atom, who discovered it, what are they made of? Learn facts, meanings, structure, parts with examples pictures or atoms
  • What is an atom ? | Nuclear Regulatory Commission - NRC
    Anything that has a mass—in other words, anything that occupies space—is composed of atoms While its name originally referred to a particle that couldn't be divided any more—the smallest thing possible—we now know that each atom is generally made up of smaller particles
  • What is an Atom? - Live Science
    Atoms consist of a nucleus made of protons and neutrons orbited by electrons Atoms are the basic units of matter Everything in the universe apart from energy is made of matter therefore atoms
  • The Structure of the Atom – Introductory Chemistry
    An atom is the smallest unit of matter that retains all of the chemical properties of an element Atoms combine to form molecules, which then interact to form solids, gases, or liquids
  • Atoms - What are they? Whats inside them? - Explain that Stuff
    Most atoms have three different subatomic particles inside them: protons, neutrons, and electrons





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