an·​ti·​par·​a·​sit·​ic | \ ˌan-tē-ˌper-ə-ˈsi-tik How to pronounce antiparasitic (audio) , -ˌpa-rə-, ˌan-tī- \
variants: or anti-parasitic

Definition of antiparasitic

: acting against parasites : used or intended to kill, repel, or remove parasites antiparasitic drugs/medicine

Other Words from antiparasitic

antiparasitic or anti-parasitic noun
Most consumer spending is still on traditional pet medications like antiparasitics — James Vlahos

Examples of antiparasitic in a Sentence

Recent Examples on the Web But few dubious solutions have had the staying power of ivermectin, an antiparasitic drug used to treat large farmyard animals. Eamon Barrett, Fortune, 31 Mar. 2022 The antiparasitic drug ivermectin did not reduce the risk of being hospitalized with COVID-19, according to a large study published Wednesday in The New England Journal of Medicine. Bysony Salzman, ABC News, 30 Mar. 2022 Researchers testing repurposed drugs against Covid-19 found that ivermectin did not reduce hospital admissions, in the largest trial yet of the effect of the antiparasitic on the disease driving the pandemic, The Wall Street Journal reports. Ed Silverman, STAT, 20 Mar. 2022 The antiparasitic drug ivermectin failed to treat COVID-19 in yet another randomized clinical trial, but the drug remains popular amid the pandemic thanks to Republican politics. Beth Mole, Ars Technica, 21 Feb. 2022 The Kansas medical board is facing attacks from state lawmakers for investigating doctors who have prescribed the antiparasitic drug ivermectin to treat or prevent COVID-19. Beth Mole, Ars Technica, 8 Feb. 2022 Rogan previously promoted off-label use of antiparasitic drug ivermectin to treat COVID-19 (regardless of FDA warnings). Amiah Taylor, Fortune, 13 Jan. 2022 Following a judge’s order, a Virginia hospital late Monday allowed a covid-19 patient in its care to receive ivermectin, a drug normally used as an antiparasitic, which health officials say should not be used to treat the coronavirus. Washington Post, 16 Dec. 2021 That hasn’t gone quite as well: a scientific quest tangled up in hundreds of studies too small to give real answers, then sidetracked by hype over the antimalarial hydroxychloroquine and then the antiparasitic ivermectin. Adam Rogers, Wired, 19 Nov. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'antiparasitic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of antiparasitic

1857, in the meaning defined above

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The first known use of antiparasitic was in 1857

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Last Updated

22 Apr 2022

Cite this Entry

“Antiparasitic.” Dictionary, Merriam-Webster, Accessed 19 May. 2022.

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More Definitions for antiparasitic


an·​ti·​par·​a·​sit·​ic | \ ˌant-i-ˌpar-ə-ˈsit-ik, ˌan-ˌtī- How to pronounce antiparasitic (audio) \

Medical Definition of antiparasitic

: acting against parasites antiparasitic drugs


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