atomic theory
noun
Physics, Chemistry.
any of several theories describing the structure, behavior, and other properties of the atom and its component parts.
Philosophy.
atomism(def 1).
Origin of atomic theory
First recorded in 1840–50
Words nearby atomic theory
atomic pile,
atomic power,
atomic reactor,
atomic spectrum,
atomic structure,
atomic theory,
atomic veteran,
atomic volume,
atomic weight,
atomicity,
atomics
British Dictionary definitions for atomic theory
atomic theory
noun
any theory in which matter is regarded as consisting of atoms, esp that proposed by John Dalton postulating that elements are composed of atoms that can combine in definite proportions to form compounds
the current concept of the atom as an entity with a definite structure
See atomic structure