: a salt of hydriodic acid
also
: the monovalent anion I− of such a salt
Examples of iodide in a Sentence
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Two additional organic ammonium salts — N,N-dimethyloctylammonium iodide (DMOAI) and phenethylammonium chloride (PEACl) — stabilised the material’s ions, stopping them from separating into different phases that hurt efficiency.
—
Aamir Khollam, Interesting Engineering, 11 Aug. 2025
In a wafer-thin crystalline sample of nickel iodide, the team observed that the spins of nickel atoms were arranged in a spiral pattern throughout the material’s lattice.
—Abhimanyu Ghoshal, New Atlas, 13 June 2025
Though public health officials said people self-treating with iodide supplements were more likely to harm than help themselves, orders spiked so sharply that Toby’s website crashed.
—Matt Hongoltz-Hetling, Popular Science, 4 May 2023
The salt in your salt shaker is probably iodized, which means it’s had a key nutrient called iodine (in the form of iodide) added to it to help prevent iodine deficiency.
—Lauren Manaker Ms, Rdn, Ld, Verywell Health, 3 Apr. 2023
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Aamir Khollam, Interesting Engineering, 11 Aug. 2025
In a wafer-thin crystalline sample of nickel iodide, the team observed that the spins of nickel atoms were arranged in a spiral pattern throughout the material’s lattice.
—Abhimanyu Ghoshal, New Atlas, 13 June 2025
Though public health officials said people self-treating with iodide supplements were more likely to harm than help themselves, orders spiked so sharply that Toby’s website crashed.
—Matt Hongoltz-Hetling, Popular Science, 4 May 2023
The salt in your salt shaker is probably iodized, which means it’s had a key nutrient called iodine (in the form of iodide) added to it to help prevent iodine deficiency.
—Lauren Manaker Ms, Rdn, Ld, Verywell Health, 3 Apr. 2023
See All Example Sentences for iodide
Cite this Entry
“Iodide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iodide. Accessed 10 Sep. 2025.
Copy CitationKids Definition
iodide
noun
io·dide
ˈī-ə-ˌdīd 
: a compound of iodine with another element or chemical group
Medical Definition
iodide
noun
io·dide
ˈī-ə-ˌdīd
: a salt of hydriodic acid
also
: the monovalent anion I− of such a salt
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