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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
The state legislation specified that Suncor needed to monitor the air for hydrogen sulfide, hydrogen cyanide and benzene.
—Noelle Phillips, The Denver Post, 5 Feb. 2024
In the last year, the landfill’s air monitoring stations have reported thousands of hourly readings of smelly hydrogen sulfide in excess of the state’s short-term exposure limit, including several that were more than 10 times above that threshold.
—Tony Briscoe, Los Angeles Times, 9 Feb. 2024
While waiting for agreements to get penned, the district is paying close attention to the recorded levels of hydrogen sulfide.
—Tammy Murga, San Diego Union-Tribune, 7 Jan. 2024
In 2014, the European Space Agency’s Rosetta spacecraft discovered that the comet 67P/Churyumov-Gerasimenko — which is too far to actually travel to — had molecules rich in hydrogen sulfide and ammonia, which smell like rotten eggs and urine, respectively, per Space.com.
—Anna Lazarus Caplan, Peoplemag, 11 Jan. 2024
Those light-requiring sulfur bacteria clearly indicate that the oceans were starved of oxygen and laced with poisonous hydrogen sulfide in the sunlit zone where most marine diversity normally thrives.
—Howard Lee, Ars Technica, 8 Feb. 2023
The air-quality monitors are measuring, on an hourly basis, the quantities of the potentially toxic gas hydrogen sulfide, which has a characteristic rotten-egg odor.
—Tammy Murga, San Diego Union-Tribune, 7 Jan. 2024
Officials say this precipitation filtered into the landfill, drenched decomposing garbage and created an ideal environment for the breeding of bacteria that release methane and smelly hydrogen sulfide.
—Tony Briscoe, Los Angeles Times, 12 Dec. 2023
And signs next to open pools of wastewater warn about toxic emissions of hydrogen sulfide.
—Tony Briscoe, Los Angeles Times, 5 Dec. 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hydrogen sulfide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1869, in the meaning defined above
Dictionary Entries Near hydrogen sulfide
Cite this Entry
“Hydrogen sulfide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20sulfide. Accessed 28 Mar. 2024.
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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Merriam-Webster unabridged
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