at·om
atom
- pronunciation:
- ae
t
m
- features:
- Word History, Word Explorer
| part of speech: |
noun |
| definition 1: |
an invisible component of any element, consisting of protons, neutrons, and electrons, once considered the smallest possible unit of matter.
|
| definition 2: |
anything extremely small; tiny bit.
- similar words:
- grain, modicum, molecule, particle
|
Atom is from an ancient Greek word that means "not able to be cut or divided."