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 Nearly 39,000 chloroquine and hydroxychloroquine tablets were seized, a measure the agency takes when drugs are imported into the US without FDA approval. Scottie Andrew, CNN, 8 Apr. 2021 The Draper executive shipped chloroquine and hydroxychloroquine falsely labeled as herbal extract for his no-bid contract with the state. Erin Alberty, The Salt Lake Tribune, 5 Apr. 2021 Hydroxychloroquine and its cousin chloroquine had also been studied as antivirals with activity against the similar SARS coronavirus and other viruses. Joel Zinberg, WSJ, 14 Dec. 2020 This had suggested that hydroxychloroquine and its analogue, chloroquine, actually increased the death rate in hospitals when taken by those with covid-19. The Economist, 13 June 2020 In June 2020, federal investigators confiscated the hydroxychloroquine and chloroquine and later charged Richards with importing them illegally. Bethany Rodgers, The Salt Lake Tribune, 24 Apr. 2021 Claims hailing unproven medications such as chloroquine, hydroxychloroquine and azithromycin continued to gain traction in Brazil long after almost every other country had left them behind. Washington Post, 14 Apr. 2021 Some evidence suggested chloroquine (of which hydroxychloroquine is a derivative) could help zinc do this job. Colleen De Bellefonds, SELF, 29 Oct. 2020 The rule adopted by the board directs doctors to provide a diagnosis with any prescription for chloroquine, hydroxychloroquine, mefloquine, or azithromycin, which doctors argue violates their patients' privacy rights. Bethany Blankley, Washington Examiner, 19 Aug. 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.

See More

First Known Use of chloroquine

1946, in the meaning defined above

History and Etymology for chloroquine

chlor- + quinoline

Keep scrolling for more

Learn More About chloroquine

Time Traveler for chloroquine

Time Traveler

The first known use of chloroquine was in 1946

See more words from the same year

Statistics for chloroquine

Last Updated

27 May 2021

Cite this Entry

“Chloroquine.” Dictionary, Merriam-Webster, Accessed 19 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

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

More from Merriam-Webster on chloroquine Encyclopedia article about chloroquine


Test Your Vocabulary

Return of Name that Color!

  • a light greenish blue color
  • Name that color:
Name That Thing

Test your visual vocabulary with our 10-question challenge!

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!