Meaning of subatomic

sub•a•tom•ic

Pronunciation: (sub"u-tom'ik), [key]
— adj. Physics.
  1. of or pertaining to a process that occurs within an atom.
  2. noting or pertaining to a particle or particles contained in an atom, as electrons, protons, or neutrons.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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