/ Dictionary / Index X xenogenesis: Meaning and Definition of Find definitions for: xen•o•gen•e•sis Pronunciation: (zen"u-jen'u-sis, zē"nu-), [key] — n. Biol. heterogenesis (def. 1). the supposed generation of offspring completely and permanently different from the parent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: xenogenesis (Thesaurus) xenogamy xenograft Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language