- a colorless, flammable, water-soluble, cumulatively poisonous gas, H2S, having the odor of rotten eggs: used chiefly in the manufacture of chemicals, in metallurgy, and as a reagent in laboratory analysis.
Origin of hydrogen sulfide
First recorded in 1870–75
Also called sulfureted hydrogen.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- A colorless, flammable poisonous gas that has a characteristic rotten-egg odor, is formed in the decomposition of organic matter containing sulfur, and is used as an antiseptic, a bleach, and a reagent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A colorless, poisonous gas that smells like rotten eggs. It is formed naturally by decaying organic matter and is the smelly component of intestinal gas. It is also emitted by volcanoes and fumaroles. Hydrogen sulfide is used in the petroleum, rubber, and mining industries, and in making sulfur. Chemical formula: H2S.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.