/ Dictionary / Index C calutron: Meaning and Definition of Find definitions for: cal•u•tron Pronunciation: (kal'yu-tron"), [key] — n. Physics. a device for separating isotopes by atomic mass, operating in a manner similar to a mass spectrograph. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. calumny Calvados Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language