co·​lis·​tin | \ kə-ˈli-stən How to pronounce colistin (audio) , kō- \

Definition of colistin

: a polymyxin produced by a bacterium (Bacillus polymyxa var. colistinus) from Japanese soil

Examples of colistin in a Sentence

Recent Examples on the Web About a decade ago, doctors needing a last-resort antibiotic turned to an old but still-effective antibiotic called colistin to cure highly resistant infections. Wired, "Farm Animals Are the Next Big Antibiotic Resistance Threat," 19 Sep. 2019 While India’s drugs technical advisory board, part of the ministry of health and family welfare, has recommended that colistin and other antimicrobials should not be used in agriculture, there is no formal ban. Ranjit Devraj, Quartz India, "Superbugs have returned to haunt India’s hospitals," 23 July 2019 The researchers also sequenced the genomes of bacteria resisting colistin and those susceptible to it. Beth Mole, Ars Technica, "Deadly superbug just got scarier—it can mysteriously thwart last-resort drug," 9 Mar. 2018 In fact, the bacteria is resistant to the last-resort antibiotic colistin. Reuters, Newsweek, "America, Welcome to the Post-Antibiotic World," 26 May 2016 Across the world, researchers in China have documented colistin-resistant Shigella flexneri, a form of bacteria that causes severe diarrhea and was discovered on a pig farm. Matthew Wellington, STAT, "Lawmakers must act on limiting antibiotic use in food animals," 19 Mar. 2018 Researchers at Emory University found that a common type of resistant bacteria, Klebsiella pneumoniae, can mask resistance to colistin. Matthew Wellington, STAT, "Lawmakers must act on limiting antibiotic use in food animals," 19 Mar. 2018 This isn’t the first time scientists have identified bacterial heteroresistance to colistin. Betsy Mckay, WSJ, "Common ‘Superbug’ Found to Disguise Resistance to Potent Antibiotic," 6 Mar. 2018 Recent reports cite different forms of bacteria in both people and animals resisting colistin, an antibiotic that doctors prescribe when other treatment options fail. Matthew Wellington, STAT, "Lawmakers must act on limiting antibiotic use in food animals," 19 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'colistin.' 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 colistin

1951, in the meaning defined above

History and Etymology for colistin

New Latin colistinus, specific epithet of the bacterium producing it

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The first known use of colistin was in 1951

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Cite this Entry

“Colistin.” Dictionary, Merriam-Webster, Accessed 7 Aug. 2020.

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co·​lis·​tin | \ kə-ˈlis-tən, kō- How to pronounce colistin (audio) \

Medical Definition of colistin

: a polymyxin produced by a bacterium of the genus Bacillus (B. polymyxa var. colistinus) and used against some gram-negative pathogens especially of the genera Pseudomonas, Escherichia, Klebsiella, and Shigella

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