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hydrogen sulfide

a colorless, flammable, water-soluble, cumulatively poisonous gas, H 2 S, 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.
Origin of hydrogen sulfide
1870-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for hydrogen sulfide
  • At the bottom of the food chain are microbes that get their energy from chemicals in the vents, usually hydrogen sulfide.
  • By mixing toilet cleaner with pesticide, anyone can make a cloud of deadly hydrogen sulfide gas.
  • These secrete hydrogen sulfide, a gas which is poisonous to animal life.
  • The cave puts out high levels of hydrogen sulfide, a gas that can be deadly to humans.
  • Scientists have also detected ammonia gas, formaldehyde, and hydrogen sulfide inside sealed sarcophagi.
  • The minerals, including hydrogen sulfide, provide food for the bottom of the ecosystem's sunless food chain.
  • Its oil is under high pressure and laced with poisonous hydrogen sulfide, which requires special equipment and handling.
  • The bacteria break down hydrogen sulfide in the vents, in the process releasing body-building energy for their hosts.
  • Sulfur is the main ingredient in hydrogen sulfide, for one.
  • It induces production of hydrogen sulfide in the bloodstream, giving the illusion that the host is dead.
hydrogen sulfide in Medicine

hydrogen sulfide n.
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.
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hydrogen sulfide in Science
hydrogen sulfide  
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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