/ Dictionary / Index B black mercuric sulfide: Meaning and Definition of Find definitions for: black' mercu'ric sul'fide Pronunciation: [key] — Chem. Chem. See under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. black measles black mold Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language