/ Dictionary / Index E endodermis: Meaning and Definition of Find definitions for: en•do•der•mis Pronunciation: (en"dō-dûr'mis), [key] — n. Bot. a specialized tissue in the roots and stems of vascular plants, composed of a single layer of modified parenchyma cells forming the inner boundary of the cortex. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. endoderm endodontics Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language