Atomic theory Meaning, Definition & Usage
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noun a theory of the structure of the atom
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noun (chemistry) any theory in which all matter is composed of tiny discrete finite indivisible indestructible particles
atomism; atomist theory; atomistic theory.
- the ancient Greek philosophers Democritus and Epicurus held atomic theories of the universe
WordNet
Definitions
- or the Doctrine of definite proportions
(Chem.) , teaches that chemical combinations take place between the supposed ultimate particles or atoms of bodies, in some simple ratio, as of one to one, two to three, or some other, always expressible in whole numbers.