| Definitions | | atom |
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noun
- (obsolete) The smallest mediaeval unit of time, equal to fifteen ninety-fourths of a second.
- (historical) A theoretical particle of matter, imagined to be incapable of further division; the smallest possible unit of substance.
- (physics) 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.
- (mathematics) A non-zero member of a wikipedia:Boolean algebra, Boolean algebra that is not a union of any other elements.
- The smallest, indivisible constituent part or unit of something.
Translations: - Dutch: atoom
- French: atome
- German: Atom
- Italian: atomo
(trans-mid)
- Spanish: í¡tomo
Etymology: From atome, from atomus "smallest particle", from Ancient Greek (polytonic, á), noun use of an adjective "indivisible", from (polytonic, á-) "without" + (polytonic, ) "to cut".
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