'atom' definitions:

Definition of 'atom'

(from WordNet)
noun
(physics and chemistry) the smallest component of an element having the chemical properties of the element
noun
(nontechnical usage) a tiny piece of anything [syn: atom, molecule, particle, corpuscle, mote, speck]

Synonyms of 'atom'

From: Moby Thesaurus

Words containing 'atom'