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.
In addition, just as President Donald Trump encouraged hydroxychloroquine and ivermectin to treat COVID-19, both unproven therapies, Kennedy claims that vitamin A supplementation using cod liver oil will prevent and treat measles despite no scientific basis for this intervention. Gordon G. Chang, MSNBC Newsweek, 8 Apr. 2025 Trying to keep the population safe from a novel infectious disease, battling to understand the virus, but also navigating people's suspicion of vaccines and science, and their desire to use bleach and ivermectin, egged on by charlatans. David Faris, MSNBC Newsweek, 11 Apr. 2025 Bowden says the complaint is related to her prescribing patients ivermectin. Geoff Brumfiel, NPR, 7 Apr. 2025 Sanders signed 35 bills into law on Tuesday, including an act authorizing over-the-counter ivermectin for human use, one creating religious rights at public schools and an act to streamline the permitting process of private clubs for restaurants, hotels and event venues. Worth Sparkman, Axios, 28 Mar. 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 29 Apr. 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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