/ Dictionary / Index G gastrodermis: Meaning and Definition of Find definitions for: gas•tro•der•mis Pronunciation: (gas"trō-dûr'mis), [key] — n. Zool. the inner cell layer of the body of an invertebrate. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gastrocolic omentum gastroduodenostomy Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language