/ Dictionary / Index E ectogenesis: Meaning and Definition of Find definitions for: ec•to•gen•e•sis Pronunciation: (ek"tō-jen'u-sis), [key] — n. Biol. development outside the body, as of an embryo in an artificial environment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ectoenzyme ectogenous Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language