/ Dictionary / Index E endoblast: Meaning and Definition of Find definitions for: en•do•blast Pronunciation: (en'du-blast"), [key] — n. Embryol. endoderm (def. 1). hypoblast (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: endoblast (Thesaurus) endobiotic endocardial Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language