/ Dictionary / Index D detect: Meaning and Definition of Find definitions for: de•tect Pronunciation: (di-tekt'), [key] — v.t. to discover or catch (a person) in the performance of some act: to detect someone cheating. to discover the existence of: to detect the odor of gas. to find out the true character or activity of: to detect a spy. to rectify alternating signal currents in a radio receiver. to demodulate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: detect (Thesaurus) detainer detection Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language