- atomic - of or relating to or comprising atoms; "atomic structure"; "atomic hydrogen"
- nuclear, atomic - (weapons) deriving destructive energy from the release of atomic energy; "nuclear war"; "nuclear weapons"; "atomic bombs"
- atomic, atomlike, minute - immeasurably small
Antonyms: macroscopic, macroscopical, large (indirect, via microscopic)
- nuclear, atomic - (weapons) deriving destructive energy from the release of atomic energy; "nuclear war"; "nuclear weapons"; "atomic bombs"