/ Dictionary / Index A allogenic: Meaning and Definition of Find definitions for: al•lo•gen•ic Pronunciation: (al"u-jen'ik), [key] — adj. (of a constituent of a rock) formed elsewhere than in the rock where it is found. Cf. authigenic. allogeneic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. allogeneic allograft Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language