1
: any of various organic compounds characterized by a sulfur atom attached to two carbon atoms
2
: a binary compound (such as CuS) of sulfur usually with a more electropositive element or group : a salt of hydrogen sulfide
Examples of sulfide in a Sentence
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Hydrogen sulfide, or H2S, levels in the Nestor neighborhood reached approximately 557 parts per billion on Friday as of this report — nearly 18 times the San Diego County Air Pollution Control District’s unsafe exposure threshold of 30 parts per billion, according to APCD monitoring data.
—
Walker Armstrong, San Diego Union-Tribune, 21 Mar. 2026
With the zirconium sulfide coating, the cathodes continued operating for more than 1,000 cycles.
—Neetika Walter, Interesting Engineering, 13 Mar. 2026
Seafloor massive sulfides at hydrothermal vents Another source of critical minerals is seafloor massive sulfides, which form near hydrothermal vents along oceanic ridges.
—Leonardo MacElloni, The Conversation, 10 Mar. 2026
Using x-ray fluorescence spectrometry, scholars determined that the ancient off-white fluid was composed of calcite, huntite, and miniscule flecks of yellow orpiment, a highly toxic sulfide of arsenic that Egyptians also used in medicine to treat syphilis and malaria.
—News Desk, Artforum, 9 Mar. 2026
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Walker Armstrong, San Diego Union-Tribune, 21 Mar. 2026
With the zirconium sulfide coating, the cathodes continued operating for more than 1,000 cycles.
—Neetika Walter, Interesting Engineering, 13 Mar. 2026
Seafloor massive sulfides at hydrothermal vents Another source of critical minerals is seafloor massive sulfides, which form near hydrothermal vents along oceanic ridges.
—Leonardo MacElloni, The Conversation, 10 Mar. 2026
Using x-ray fluorescence spectrometry, scholars determined that the ancient off-white fluid was composed of calcite, huntite, and miniscule flecks of yellow orpiment, a highly toxic sulfide of arsenic that Egyptians also used in medicine to treat syphilis and malaria.
—News Desk, Artforum, 9 Mar. 2026
See All Example Sentences for sulfide
Cite this Entry
“Sulfide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sulfide. Accessed 31 Mar. 2026.
Copy CitationKids Definition
sulfide
noun
sul·fide
ˈsəl-ˌfīd 
: a compound of sulfur with one or more other elements : a salt of hydrogen sulfide
Medical Definition
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