/ Dictionary / Index A arrestant: Meaning and Definition of Find definitions for: ar•rest•ant Pronunciation: (u-res'tunt), [key] — n. Entomol. a substance that interrupts the normal development of an insect. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arrest arrestee Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language