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Showing results for antimalarial. Search instead for antimalarials.

antimalarial

American  
[an-tee-muh-lair-ee-uhl, an-tahy‑] / ˌæn ti məˈlɛər i əl, ˌæn taɪ‑ /

adjective

  1. of or relating to a substance that is used in the treatment or prevention of malaria.

noun

  1. any such substance, as a drug.

antimalarial British  
/ ˌæntɪməˈlɛərɪəl /

adjective

  1. effective in the treatment of malaria

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an antimalarial drug or agent

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of antimalarial

First recorded in 1890–95; anti- + malarial

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It is combined in the drug candidate with a new formulation of lumefantrine, an antimalarial currently used in artemisinin therapies.

From The Wall Street Journal • Nov. 12, 2025

The last time resistance to an antimalarial spread in Africa it led to a tripling in the number of children dying.

From BBC • Jul. 18, 2024

The antimalarial is administered orally as soon as patients learn they are pregnant and, if taken on regularly, can significantly reduce the chances of severe malaria over the course of gestation.

From Salon • Jun. 3, 2024

Because of the resistance problem, atovaquone is used to treat malaria only in combination with another antimalarial called proguanil.

From Science Daily • Oct. 20, 2023

Much of what we do know has been learned through hard experience in the antimalarial campaigns carried out by the World Health Organization.

From "Silent Spring" by Rachel Carson

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.