/ Dictionary / Index I intra-atomic: Meaning and Definition of Find definitions for: in•tra-a•tom•ic Pronunciation: (in"tru-u-tom'ik), [key] — adj. within an atom or atoms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. intra-abdominal intracardiac Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language