/ Dictionary / Index E endosarc: Meaning and Definition of Find definitions for: en•do•sarc Pronunciation: (en'du-särk"), [key] — n. Biol. the endoplasm of a protozoan (opposed to ectosarc). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. endorsement in blank endoscope Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language