/ Dictionary / Index E endolymph: Meaning and Definition of Find definitions for: en•do•lymph Pronunciation: (en'du-limf"), [key] — n. Anat. the fluid contained within the membranous labyrinth of the ear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: endolymph (Thesaurus) endolithic endomembrane Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language