əˈtämik, -ēk also aˈ- adjective
also atomical -mə̇kəl, -ēk-
1. : of, relating to, or concerned with atoms
2. : marked by acceptance of the theory of atomism
3. : minute : divided into minute particles
4. : being ultimate, logically simple, unanalyzable, or noncompound either actually or taken as such within a given universe of discourse
“this is red” may be considered an atomic proposition
specifically : without sentential connectives and variables — compare monadic
5. of a chemical element : in the state of separate atoms : not combined with itself or with other elements
atomic hydrogen
6. : of, relating to, or utilizing changes in the nucleus of an atom:
a. : utilizing atomic energy
atomic power
atomic weapons
b. : utilizing or resulting from an atom bomb
atomic armaments
atomic warfare
an atomic explosion
• atom·i·cal·ly -mə̇k(ə)lē, -ēk-, -li adverb