(physics and chemistry) the smallest component of an element having the chemical properties of the element
atom, molecule, particle, corpuscle, mote, speck(noun)
(nontechnical usage) a tiny piece of anything
The smallest, indivisible constituent part or unit of something.
The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.
A non-zero member of a Boolean algebra that is not a union of any other elements.
A theoretical particle of matter, imagined to be incapable of further division; the smallest possible unit of substance.
The smallest medieval unit of time, equal to fifteen ninety-fourths of a second.
An individual number or symbol, as opposed to a list. A scalar value.
A very small amount.
Origin: From atome, from atomus, from ἄτομος, from ἀ- + τέμνω.
an ultimate indivisible particle of matter
an ultimate particle of matter not necessarily indivisible; a molecule
a constituent particle of matter, or a molecule supposed to be made up of subordinate particles
the smallest particle of matter that can enter into combination; one of the elementary constituents of a molecule
anything extremely small; a particle; a whit
to reduce to atoms
Origin: [L. atomus, Gr. , uncut, indivisible; 'a priv. + , verbal adj. of to cut: cf. F. atome. See Tome.]
The name Atom applies to a pair of related Web standards. The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol is a simple HTTP-based protocol for creating and updating web resources. Web feeds allow software programs to check for updates published on a website. To provide a web feed, a site owner may use specialized software that publishes a list of recent articles or content in a standardized, machine-readable format. The feed can then be downloaded by programs that use it, like websites that syndicate content from the feed, or by feed reader programs that allow Internet users to subscribe to feeds and view their content. A feed contains entries, which may be headlines, full-text articles, excerpts, summaries, and/or links to content on a website, along with various metadata. The Atom format was developed as an alternative to RSS. Ben Trott, an advocate of the new format that became Atom, believed that RSS had limitations and flaws—such as lack of on-going innovation and its necessity to remain backward compatible— and that there were advantages to a fresh design.
Chambers 20th Century Dictionary
at′om, n. a particle of matter so small that it cannot be cut or divided, the unit of matter; anything very small.—adjs. Atom′ic, -al, pertaining to atoms.—ns. Atomic′ity; Atomisā′tion (med.) the reduction of liquids to the form of spray; At′omism, the doctrine that atoms arranged themselves into the universe: the atomic theory; At′omist, one who believes in atomism.—adj. Atomis′tic.—adv. Atomist′ically.—n. At′omy, an atom, or mote: (Shak.) a pygmy.—Atomic philosophy, a system of philosophy enunciated by Democritus, which taught that the ultimate constituents of all things are indivisible particles, differing in form and in their relations to each other; Atomic theory, the hypothesis that all chemical combinations take place between the ultimate particles of bodies, uniting each atom to atom, or in proportions expressed by some simple multiple of the number of atoms. [Gr. atomos—a, not, temnein, tamein, to cut. See Atom.]
The Standard Electrical Dictionary
The ultimate particle or division of an elementary substance; the smallest part that can exist in combination, and one which cannot exist alone. An elementary substance is composed of molecules just as truly as a compound one, but the atoms in the molecule of an elementary substance are all precisely alike. Hence atoms are the units of chemistry, they have to do with combinations, but the physical unit, the smallest particle of matter that can have an independent existence, is the molecule. The two are often confounded, especially by writers of a few years ago, so that by "atom" the molecule is often meant. There is nothing to be said of their size or mass. All such calculations refer to the molecule, q. v., often spoken of and called the atom. [Transcriber's note: Yet to be discovered: electron--1897 (5 years), proton--1920 (28 years), neutron--1932 (30 years), quark--1961 (69 years).]
British National Corpus
Rank popularity for the word 'ATOM' in Nouns Frequency: #2189
The numerical value of ATOM in Chaldean Numerology is: 7
The numerical value of ATOM in Pythagorean Numerology is: 4
Sample Sentences & Example Usage
History is the short trudge from Adam to atom.
A physicist is an atom's way of knowing about atoms.
Split the atom's heart, and low Within it thou wilt find a sun.
The best defense against the atom bomb is not to be there when it goes off.
I celebrate myself, And what I assume you shall assume, For every atom belonging to me as good belongs to you.
Images & Illustrations of ATOM
Translations for ATOM
From our Multilingual Translation Dictionary
- àtomCatalan, Valencian
- atomi, perusosanenFinnish
- dadamScottish Gaelic
- लघुत्तम अविभाज्य घटक, परमाणु, पल, क्षणHindi
- atóm, frumeindIcelandic
- 単位, 原子, 元素Japanese
- បរិមាណូ, អាតូមKhmer
- 原子, 원자Korean
- AtomLuxembourgish, Letzeburgesch
- अणू, क्षणMarathi
- imbumbuloSouthern Ndebele
- अणु, क्षण, परमाणुSanskrit
- атом, atomSerbo-Croatian
- පරමාණුSinhala, Sinhalese
- ปรมาณู, อะตอมThai
- не́ділка, атомUkrainian
- nguyên tử, 原子Vietnamese
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