/ Dictionary / Index M Metol: Meaning and Definition of Find definitions for: Me•tol Pronunciation: (mē'tôl, -tol), [key] — Chem., Trademark. Chem.,Trademark. a brand name for a colorless, water-soluble salt, CHNOS, used chiefly as a photographic developer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. metoestrus metolazone Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language