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Definition of Subatomic

Babylon English

of or pertaining to particles within an atom; of or pertaining to processes occurring within an atom
Subatomic Definition from Language, Idioms & Slang Dictionaries & Glossaries
WordNet 2.0

Adjective
1. of or relating to constituents of the atom or forces within the atom; "subatomic particles"; "harnessing subatomic energy"
(pertainym) atom
2. of dimensions smaller than atomic dimensions
(similar) microscopic, microscopical, small
Subatomic Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
In the physical sciences, subatomic particles are particles smaller than atoms. (although some subatomic particles have mass greater than some atoms). There are two types of subatomic particles: elementary particles, which according to current theories are not made of other particles; and composite particles. Particle physics and nuclear physics study these particles and how they interact.

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