/ Dictionary / Index O outcross: Meaning and Definition of Find definitions for: out•cross Pronunciation: (v.out"krôs', -kros'n.out'krôs", -kros"), [key] — v.t. to cross (animals or plants) by breeding individuals of different strains but, usually, of the same breed. to produce (a hybrid) by this method. —n. a hybrid animal or plant so produced. an act of outcrossing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. outcrop outcry Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language