/ Dictionary / Index C comptroller: Meaning and Definition of Find definitions for: comp•trol•ler Pronunciation: (kun-trō'lur spelling pron. komp-trō'lur), [key] — n. controller (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: comptroller (Thesaurus) Compton effect Comptroller General of the United States 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