Dictionary
hy'drogen sul'fide
a colorless, flammable, water-soluble, cumulatively poisonous gas, H
2S, having the odor of rotten eggs: used chiefly in the manufacture of chemicals, in metallurgy, and as a reagent in laboratory analysis. Also called
sulfureted hydrogen. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.