/ Dictionary / Index M mercury fulminate: Meaning and Definition of Find definitions for: mer'cury ful'minate Pronunciation: [key] a gray, crystalline solid, Hg(CNO), used chiefly in the manufacture of commercial and military detonators. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mercury bichloride mercury mass Related Content Daily Word Quiz: verdant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language