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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.

These iron crystals have long been a key focus for antimalarial drugs, yet their unusual movement has puzzled scientists since it was first observed.

From Science Daily • Mar. 19, 2026

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

“Now is the time to act before millions of people die due to increasingly ineffective antimalarial treatments,” said Prof Olugbenga Mokuolu, from the department of paediatrics at the University of Ilorin in Nigeria.

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

He started taking malaria pills, but they didn’t do any good, so he asked one of the nurses to give him an injection of an antimalarial drug.

From "The Hot Zone" by Richard Preston

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