my·​co·​bac·​te·​ri·​um | \ ˌmī-kō-bak-ˈtir-ē-əm How to pronounce mycobacterium (audio) \

Definition of mycobacterium

: any of a genus (Mycobacterium) of nonmotile aerobic acid-fast bacteria that include numerous saprophytes and the pathogens causing tuberculosis and leprosy

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Other Words from mycobacterium

mycobacterial \ ˌmī-​kō-​bak-​ˈtir-​ē-​əl How to pronounce mycobacterial (audio) \ adjective

Examples of mycobacterium in a Sentence

Recent Examples on the Web

In 2017, Zhu graduated with a Ph.D. and a fascination with the basic biology of the mycobacterium that is the causative agent of TB. Jeffrey Mervis, Science | AAAS, "When Europeans do science in China," 11 Sep. 2019 In many American homes, water is treated with chlorine and chloramine, which kill pathogens but not mycobacteria, a genus that includes the cause of tuberculosis. Lisa Margonelli, WSJ, "‘Never Home Alone’ Review: The Critters Chez Nous," 28 Nov. 2018 Mice exposed to a species of mycobacteria are more likely to remain calm when facing a bigger, more aggressive mouse. Lisa Margonelli, WSJ, "‘Never Home Alone’ Review: The Critters Chez Nous," 28 Nov. 2018 The hospital pointed to a piece of operating room equipment as the source of the infection, which was caused by a bacteria known as mycobacterium abscessus. Chelsea Brasted,, "At least 12 patients contract rare infection after Children's Hospital heart surgeries: report," 11 Sep. 2017 It was closed again Dec. 16 after testing found another strain of mycobacterium. Courtney Perkes, Orange County Register, "Anaheim dental clinic where children contracted serious infections to reopen Monday," 18 Apr. 2017 Tests found mycobacterium and the agency ordered the clinic to stop using water and to replace its water delivery system. Jordan Graham, Orange County Register, "Dental clinic claims filed against Anaheim, Orange County after children fell ill," 11 Apr. 2017

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

1909, in the meaning defined above

History and Etymology for mycobacterium

New Latin

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Last Updated

20 Sep 2019

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Time Traveler for mycobacterium

The first known use of mycobacterium was in 1909

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my·​co·​bac·​te·​ri·​um | \ -ˈtir-ē-əm How to pronounce mycobacterium (audio) \

Medical Definition of mycobacterium

1 capitalized : a genus of nonmotile acid-fast aerobic bacteria of the family Mycobacteriaceae that are usually slender and difficult to stain and that include the causative agents of tuberculosis (M. tuberculosis) and leprosy (M. leprae) as well as numerous purely saprophytic forms
2 plural mycobacteria\ -​ē-​ə How to pronounce mycobacteria (audio)\ : any bacterium of the genus Mycobacterium or a closely related genus

Other Words from mycobacterium

mycobacterial \ -​ē-​əl How to pronounce mycobacterial (audio) \ adjective

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to wander slowly or to speak indistinctly

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