atom
noun
(physics and chemistry) the smallest component of an element having the chemical properties of the element
(nontechnical usage) a tiny piece of anything
Source: WordNet 3.1, Princeton University
Atom meaning
What does “atom” mean? Definitions, examples, synonyms and opposites.
“atom” is a noun with 2 meanings. Its most common meaning is: (physics and chemistry) the smallest component of an element having the chemical properties of the element.