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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.
(history of science) A hypothetical particle posited by Greek philosophers as an ultimate and indivisible component of matter.
The smallest, indivisible constituent part or unit of something.
In logical atomism, a fundamental fact that cannot be further broken down.
How to use "ATOM" in a sentence
"In a Venn diagram, an atom is depicted as an area circumscribed by lines but not cut by any line."
A non-zero member of a Boolean algebra that is not a union of any other elements…
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Open "ATOM" in Dictionary ›About this page: This page provides the definition, meaning, pronunciation, synonyms, and usage examples for the word ATOM. It is part of the Word Puzzle Game dictionary — a free English word reference with 1,000+ words used in our puzzles. Difficulty: easy · Letters: 4 · More 4-letter words