ivermectin

noun

iver·​mec·​tin ˌī-vər-ˈmek-tən How to pronounce ivermectin (audio)
: a drug mixture of two structurally similar semisynthetic lactones that is used in veterinary medicine as an anthelmintic, acaricide, and insecticide and in human medicine to treat onchocerciasis

Examples of ivermectin in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Both were given with various anti-parasitic medications, including ivermectin and albendazole. Cara Lynn Shultz, People.com, 2 July 2025 In the final days of this year’s legislative session, Idaho lawmakers passed a bill to allow pharmacies to sell ivermectin over the counter. Sarah Cutler july 7, Idaho Statesman, 7 July 2025 Nearly all would simply permit health care providers and pharmacists to distribute ivermectin without a prescription. Erika Edwards, NBC news, 9 June 2025 Some states, such as Alabama, have considered legislation that would protect pharmacists from any possible disciplinary action for dispensing ivermectin without a prescription. Beth Mole, ArsTechnica, 10 June 2025 See All Example Sentences for ivermectin

Word History

Etymology

perhaps from di- + New Latin avermitilis (specific epithet of Streptomyces avermitilis, bacterium from which it is derived) + English -ect- (of unknown origin) + -in entry 1

First Known Use

1981, in the meaning defined above

Time Traveler
The first known use of ivermectin was in 1981

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Cite this Entry

“Ivermectin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ivermectin. Accessed 23 Jul. 2025.

Medical Definition

ivermectin

noun
iver·​mec·​tin ˌī-vər-ˈmek-tən How to pronounce ivermectin (audio)
: a drug mixture of two structurally similar semisynthetic macrocyclic lactones that is a derivative of avermectin used in veterinary medicine as an anthelmintic, acaricide, and insecticide and in human medicine to treat onchocerciasis

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