/ Dictionary / Index R releaser: Meaning and Definition of Find definitions for: re•leas•er Pronunciation: (ri-lē'sur), [key] — n. a person or thing that releases. a key stimulus, as a sound, odor, moving shape, or patch of color, that elicits a predictable behavioral response in an animal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. release print release therapy Related Content Daily Word Quiz: perennial Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language