/ Dictionary / Index A antielectron: Meaning and Definition of Find definitions for: an•ti•e•lec•tron Pronunciation: (an"tē-i-lek'tron, an"tī-), [key] — n. Physics. a positron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: antielectron (Thesaurus) antidumping antiemetic Related Content Daily Word Quiz: portent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language