Greek atomos meant indivisible, with deeper components a-, not, and temnein, cut. Latin atomus carried the word toward English.
The literal historical name is scored. It does not assert that atoms are indivisible in modern physics.
Sources
- Merriam-Webster: atom
Word History and Kids Etymology give the deeper components, Latin stage and old meaning.
- Online Etymology Dictionary: epitome
Also built on Greek *temnein* "to cut": epitome (from *epitemnein* "cut short")