/ Dictionary / Index E endorheic: Meaning and Definition of Find definitions for: en•do•rhe•ic Pronunciation: (en"du-rē'ik), [key] — adj. of or pertaining to interior drainage basins. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. end organ endorphin Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language