an·​ti·​par·​a·​sit·​ic ˌan-tē-ˌper-ə-ˈsi-tik How to pronounce antiparasitic (audio)
variants or anti-parasitic
: acting against parasites : used or intended to kill, repel, or remove parasites
antiparasitic drugs/medicine
antiparasitic noun
or anti-parasitic
Most consumer spending is still on traditional pet medications like antiparasitics James Vlahos

Examples of antiparasitic in a Sentence

Recent Examples on the Web Shkreli increased the price of the antiparasitic drug Daraprim -- an anti-malaria medication often prescribed for HIV patients -- by 4,000%, from $17.50 per pill to $750 per pill in 2015. Aaron Katersky, ABC News, 23 Jan. 2024 The disgraced trio argues that the FDA's statements interfered with their ability to prescribe the antiparasitic drug to COVID-19 patients—including some patients the doctors had never actually examined, according to allegations by state medical boards. Beth Mole, Ars Technica, 5 Sep. 2023 The compound is also known to have anti-inflammatory and, yes, some antiparasitic properties. Stephen C. George, Discover Magazine, 10 Oct. 2023 The patient had been sent home soon after the surgery with antiparasitic drugs and had not returned to hospital since, Senanayake said. Rod McGuirk,, 29 Aug. 2023 One of the key features of Veterinary Formula Clinical Care is its antiparasitic properties. Amber Smith, Discover Magazine, 29 Aug. 2023 The overuse of antiparasitic drugs in sheep and goats and the trade of these animals have led to widespread drug resistance across the globe. Bradley Van Paridon, Scientific American, 1 June 2023 More than 1,100 study participants, all of whom were overweight or had obesity, were randomly assigned to one of six groups that received various combinations of metformin, the antiparasitic drug ivermectin, the antidepressant drug fluvoxamine or a placebo. Lucy Tu, Scientific American, 22 June 2023 This antiparasitic mange shampoo may also be used with other topical spot-on flea and tick medications. Amber Smith, Discover Magazine, 22 Oct. 2022 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'antiparasitic.' 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

1857, in the meaning defined above

Time Traveler
The first known use of antiparasitic was in 1857

Dictionary Entries Near antiparasitic

Cite this Entry

“Antiparasitic.” Dictionary, Merriam-Webster, Accessed 24 Feb. 2024.

Medical Definition


an·​ti·​par·​a·​sit·​ic ˌant-i-ˌpar-ə-ˈsit-ik, ˌan-ˌtī- How to pronounce antiparasitic (audio)
: acting against parasites
antiparasitic drugs
Last Updated: - Updated example sentences
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