/ Dictionary / Index M mercurous: Meaning and Definition of Find definitions for: mer•cu•rous Pronunciation: (mur-kyoor'us, mûr'kyur-us), [key] — adj. Chem. containing univalent mercury, Hg⫀ or Hg⫀. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mercurous (Thesaurus) Mercurochrome mercurous chloride Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language