atom [at′əm]
[ME attome < OFr atome < L atomus < Gr atomos, uncut, indivisible, atom < a-, not + tomos < temnein, to cut: see -TOMY]
1. Obs. any of the indivisible particles postulated by philosophers as the basic component of all matter
2. a tiny particle of anything; jot
3. Chem. Physics any of the smallest particles of an element that combine with similar particles of other elements to produce compounds: atoms combine to form molecules, and consist of a complex arrangement of electrons revolving about a positively charged nucleus containing (except for hydrogen) protons and neutrons and other particles
the atom
nuclear energy

English World dictionary. . 2014.


Look at other dictionaries:

  • Atom — См. Атом Термины атомной энергетики. Концерн Росэнергоатом, 2010 …   Термины атомной энергетики

  • Atom — • Primarily, the smallest particle of matter which can exist Catholic Encyclopedia. Kevin Knight. 2006. Atom     Atom     † …   Catholic encyclopedia

  • ATOM — Pour les articles homonymes, voir Atom (homonymie). Atom Extension de fichier …   Wikipédia en Français

  • Atom — [a to:m], das; s, e: kleinstes, mit chemischen Mitteln nicht weiter zerlegbares Teilchen eines chemischen Grundstoffes: Atome sind elektrisch neutral. Zus.: Wasserstoffatom. * * * Atom 〈n. 11; Chem.〉 1. kleinstes, mit chem. Mitteln nicht mehr… …   Universal-Lexikon

  • atom — ATÓM, atomi, s.m. 1. Cea mai mică parte dintr un element chimic care mai păstrează însuşirile chimice ale elementului respectiv. ♢ (fiz.; în compusul) Atom gram = greutatea exprimată în grame a masei unui atom. 2. Corpuscul infinit de mic,… …   Dicționar Român

  • Atom — Sn kleinstes Teilchen std. (15. Jh., Form 19. Jh.) Entlehnung. Entlehnt aus l. atomus f., zunächst mit lateinischer Flexion und maskulinem Genus. Das lateinische Wort wiederum ist entlehnt gr. átomos, einer Substantivierung von gr. átomos… …   Etymologisches Wörterbuch der deutschen sprache

  • 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… …   The Collaborative International Dictionary of English

  • Atom — Atom, von ἄτoμoν, unteilbar, bezeichnete im Sinne der altgriechischen Philosophen die kleinsten Teilchen der Materie. In den Händen der Chemiker hat sich der Begriff des Atoms dahin umgestaltet, daß es, für jedes… …   Lexikon der gesamten Technik

  • atom — late 15c., as a hypothetical indivisible body, the building block of the universe, from L. atomus (especially in Lucretius) indivisible particle, from Gk. atomos uncut, unhewn; indivisible, from a not + tomos a cutting, from temnein to cut (see… …   Etymology dictionary

  • Atom — At om, v. t. To reduce to atoms. [Obs.] Feltham. [1913 Webster] …   The Collaborative International Dictionary of English

  • ATOM —         (от греч. неделимый), понятие др. греч. философии, введённое Леекиппом для обозначения мельчайших, далее уже неделимых единиц бытия, из которых состоят все вещи (лат. пер. Individuum). Согласно Левкиппу и Демокриту, А. не обладают к. л.… …   Философская энциклопедия

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