atomic
1. [ adjective ] of or relating to of comprising atoms
Examples:

"atomic structure" "atomic hydrogen"

Related terms: atom
2. [ adjective ] (weapons) deriving destructive energy from the release of atomic energy
Synonyms: nuclear
Examples:

"nuclear war" "nuclear weapons" "atomic bombs"

Related terms: conventional thermonuclear
3. [ adjective ] immeasurably small
Synonyms: atomlike minute
Related terms: microscopic
Similar spelling:   atomistic
  atonic
  atomize
  atomism
  atomise
  at_once
  atomizer
  atomiser
  atonicity