Definitions for ATOMˈæt əm

This page provides all possible meanings and translations of the word ATOM

Random House Webster's College Dictionary

at•omˈæt əm(n.)

  1. the smallest component of an element having the chemical properties of the element, consisting of a positively charged nucleus of neutrons and protons that exerts an electrical attraction on one or more electrons in motion around it.

    Category: Physics

  2. this component as the source of nuclear energy.

    Category: Energy

  3. a hypothetical particle of matter so minute as to admit of no division.

  4. anything extremely small; a minute quantity; speck; scintilla:

    not an atom of truth in that statement.

Origin of atom:

1350–1400; < L atomus < Gk átomos lit., undivided =a-a-6+-tomós divided <témnein to cut

Princeton's WordNet

  1. atom(noun)

    (physics and chemistry) the smallest component of an element having the chemical properties of the element

  2. atom, molecule, particle, corpuscle, mote, speck(noun)

    (nontechnical usage) a tiny piece of anything

Kernerman English Learner's Dictionary

  1. atom(noun)ˈæt əm

    the smallest particle of a chemical element

Wiktionary

  1. atom(Noun)

    The smallest, indivisible constituent part or unit of something.

  2. atom(Noun)

    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.

  3. atom(Noun)

    A non-zero member of a Boolean algebra that is not a union of any other elements.

  4. atom(Noun)

    A theoretical particle of matter, imagined to be incapable of further division; the smallest possible unit of substance.

  5. atom(Noun)

    The smallest medieval unit of time, equal to fifteen ninety-fourths of a second.

  6. atom(Noun)

    An individual number or symbol, as opposed to a list. A scalar value.

  7. atom(Noun)

    A very small amount.

  8. Origin: From atome, from atomus, from ἄτομος, from ἀ- + τέμνω.

Webster Dictionary

  1. Atom(noun)

    an ultimate indivisible particle of matter

  2. Atom(noun)

    an ultimate particle of matter not necessarily indivisible; a molecule

  3. Atom(noun)

    a constituent particle of matter, or a molecule supposed to be made up of subordinate particles

  4. Atom(noun)

    the smallest particle of matter that can enter into combination; one of the elementary constituents of a molecule

  5. Atom(noun)

    anything extremely small; a particle; a whit

  6. Atom(verb)

    to reduce to atoms

Freebase

  1. Atom

    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.

The Standard Electrical Dictionary

  1. Atom

    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

  1. Nouns Frequency

    Rank popularity for the word 'ATOM' in Nouns Frequency: #2189


Translations for ATOM

Kernerman English Multilingual Dictionary

atom(noun)

the smallest part of an element.

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