hydrogen sulfide

noun

: a flammable poisonous gas H2S that has an odor suggestive of rotten eggs and is found especially in many mineral waters and in putrefying matter

Examples of hydrogen sulfide in a Sentence

Recent Examples on the Web
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Ew, that smell After about 48 hours on the beach, sargassum starts to decay and can produce hydrogen sulfide and ammonia gases. Bill Kearney, Sun Sentinel, 12 June 2026 The purifiers are part of the county’s effort to provide temporary relief to South Bay residents exposed to hydrogen sulfide from the polluted waterway while the United States and Mexico work to address infrastructure failures at a transboundary wastewater treatment facility. Walker Armstrong, San Diego Union-Tribune, 8 June 2026 Seasoned explorers will generally bring gas meters to check for dangerous levels of fumes, including potentially flammable hydrogen sulfide, which is produced by decomposition, Duncan said. ABC News, 4 June 2026 One of the latest challenges is hydrogen sulfide – a foul-smelling gas given off by decomposing bat droppings inside the chamber, that caused some crew members to faint, Kengkad told CNN. Kocha Olarn, CNN Money, 28 May 2026 See All Example Sentences for hydrogen sulfide

Word History

First Known Use

1869, in the meaning defined above

Time Traveler
The first known use of hydrogen sulfide was in 1869

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Cite this Entry

“Hydrogen sulfide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20sulfide. Accessed 18 Jun. 2026.

Kids Definition

hydrogen sulfide

noun
: a flammable poisonous gas with a disagreeable odor suggestive of rotten eggs

Medical Definition

hydrogen sulfide

noun
: a flammable poisonous gas H2S that has an odor suggestive of rotten eggs and is found especially in many mineral waters and in putrefying matter
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