isoniazid

noun
iso·​ni·​a·​zid | \ˌī-sə-ˈnī-ə-zəd \

Definition of isoniazid 

: a crystalline compound C6H7N3O used in treating tuberculosis

Examples of isoniazid in a Sentence

Recent Examples on the Web

The World Health Organization has estimated that in 2016, some 600,000 cases of tuberculosis were resistant to at least two of the front-line drugs used to treat tuberculosis, rifampicin and isoniazid. Melissa Healy, latimes.com, "Scientists have a promising new approach for treating drug-resistant tuberculosis," 25 Apr. 2018 Doctors have been prescribing two TB drugs, rifampicin and isoniazid, for almost half of a century. Emily Baumgaertner, New York Times, "TB Treatment May Leave Some Patients Contagious," 6 Apr. 2018 Patients received standard drug doses to treat TB, but concentrations in the blood were found to be jarringly low: 84 percent of the participants had substandard levels of isoniazid, and 78 percent fell below targets for rifampicin. Emily Baumgaertner, New York Times, "TB Treatment May Leave Some Patients Contagious," 6 Apr. 2018

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

1952, in the meaning defined above

History and Etymology for isoniazid

is- + nicotinic acid + hydrazide

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The first known use of isoniazid was in 1952

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More Definitions for isoniazid

isoniazid

noun
iso·​ni·​a·​zid | \ˌī-sə-ˈnī-ə-zəd \

Medical Definition of isoniazid 

: a crystalline compound C6H7N3O used in treating tuberculosis

called also isonicotinic acid hydrazide

More from Merriam-Webster on isoniazid

Britannica.com: Encyclopedia article about isoniazid

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