/ Dictionary / Index P pheromone: Meaning and Definition of Find definitions for: pher•o•mone Pronunciation: (fer'u-mōn"), [key] — n. Animal Behav. any chemical substance released by an animal that serves to influence the physiology or behavior of other members of the same species. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pheromone (Thesaurus) pheresis phew Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language