/ Dictionary / Index C cyclotron: Meaning and Definition of Find definitions for: cy•clo•tron Pronunciation: (sī'klu-tron", sik'lu-), [key] — n. Physics. an accelerator in which particles are propelled in spiral paths by the use of a constant magnetic field. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cyclotron (Thesaurus) cyclotrimethylenetrinitramine Cyd Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language