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isoniazid

American  
[ahy-suh-nahy-uh-zid] / ˌaɪ səˈnaɪ ə zɪd /

noun

Pharmacology.
  1. a white, crystalline, water-soluble solid, C 6 H 7 N 3 O, used in the treatment of tuberculosis.


isoniazid British  
/ ˌaɪsəʊˈnaɪəzɪd /

noun

  1. a soluble colourless crystalline compound used to treat tuberculosis. Formula: C 6 H 7 N 3 O

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of isoniazid

First recorded in 1950–55; short for isonicotinic acid hydrazide

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

But most importantly, when an effective treatment became available, it was disseminated worldwide, and part of that happened because isoniazid was unpatentable, so costs for producing it and treating people with it remained low.

From Scientific American Oct. 17, 2023

Instead of subjecting them all to a recommended prevention strategy—a 9-month course of the drug isoniazid—they treated half with the 9-month course and half with a monthlong combination of isoniazid and rifapentine.

From Science Magazine Mar. 5, 2018

Decades later, differences in the metabolism of isoniazid were shown to be caused by inherited variants in the NAT2 gene, which encodes the N-acetyltransferase 2 enzyme11, 12.

From Nature Oct. 13, 2015

Notably, since 2005, there have been major disruptions in the supply of the TB drug isoniazid, as well as tuberculin, which is used to diagnose TB infection.

From Washington Post

The first Navajo to be treated with isoniazid was a seven-month-old baby girl named Patty.

From Time Magazine Archive

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