Student Dictionary

3 entries found for atom.
To select an entry, click on it.
 
Main Entry: at·om
Pronunciation: primarystressat-schwam
Function: noun
Etymology: Middle English atom "particle," from Latin atomus (same meaning), derived from Greek atomos "unable to be divided," from a- "not" and temnein "to cut"
1 : a tiny particle : BIT
2 : the smallest particle of an element that has the properties of the element and can exist either alone or in combination
3 : the atom considered as a source of vast potential energy

Pronunciation Symbols