/ Dictionary / Index E embryotoxic: Meaning and Definition of Find definitions for: em•bry•o•tox•ic Pronunciation: (em"brē-ō-tok'sik), [key] — adj. poisonous to embryos. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. embryotomy embryo transfer Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language