[], (Adjective)

Definitions:
- Of the nature of an atom or atoms; consisting of or involving atoms. Compare "atomic".

- Chiefly . Designating or adhering to the doctrine of atoms as understood in ancient Greek philosophy or later.


Phrases:

Origin:
early 17th century; earliest use found in Edmund Bolton (?1575/5–?1634), antiquary and historian. From atom + -ical