chlo·​ro·​quine | \ ˈklȯr-ə-ˌkwēn How to pronounce chloroquine (audio) \

Definition of chloroquine

: an antimalarial drug C18H26ClN3 administered in the form of its bitter crystalline diphosphate

Examples of chloroquine in a Sentence

Recent Examples on the Web The announcement from the agency is the latest blow to the hopes that hydroxychloroquine, as well as the related drug chloroquine, could provide patients an option at a time when there are too few treatments available for the virus. Andrew Joseph, STAT, 17 June 2020 At its core, hydroxychloroquine, along with its close cousin chloroquine, is an antimalarial medication that primarily treats and prevents the mosquito-borne infection by killing the microorganism (a plasmodium parasite) that causes it. Popular Science, 29 May 2020 Mandetta, who as Health Minister disputed Bolsonaro's endorsement of unproven drugs chloroquine and hydroxychloroquine as Covid-19 treatments, also said the government knew early on that those drugs had no scientific backing. Rodrigo Pedroso And Caitlin Hu, CNN, 5 May 2021 Hypothetically, chloroquine and hydroxychloroquine can mess all that up. Adam Rogers, Wired, 11 Nov. 2020 Federal authorities last week handed over the hydroxychloroquine and chloroquine to a company called Trilogy MedWaste for disposal, a spokesman for the Utah U.S. Attorney’s Office told The Tribune. Bethany Rodgers, The Salt Lake Tribune, 23 June 2021 In July of 2020, the US Food and Drug Administration revoked an emergency use authorization for hydroxychloroquine and chloroquine to treat Covid-19. Daniella Diaz And Elizabeth Joseph, CNN, 12 June 2021 But another study published online in May found that neither suramin nor another antiparasitic drug chloroquine could stop the virus from entering human cells – through a receptor called ACE2 – or from replicating. Miriam Fauzia, USA TODAY, 15 June 2021 After the war, chloroquine was so widely used that parasites grew resistant to it. The Economist, 16 Dec. 2020

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

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First Known Use of chloroquine

1946, in the meaning defined above

History and Etymology for chloroquine

chlor- + quinoline

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The first known use of chloroquine was in 1946

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Cite this Entry

“Chloroquine.” Dictionary, Merriam-Webster, Accessed 9 Dec. 2021.

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More Definitions for chloroquine


chlo·​ro·​quine | \ ˈklōr-ə-ˌkwēn, ˈklȯr- How to pronounce chloroquine (audio) \

Medical Definition of chloroquine

: an antimalarial drug administered in the form of its diphosphate C18H26ClN3·2H3PO4 or hydrochloride C18H26ClN3·HCl

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