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isoniazid

[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.
Origin
1950-1955
1950-55; short for isonicotinic acid hydrazide
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for isoniazid

isoniazid

/ˌaɪsəʊˈnaɪəzɪd/
noun
1.
a soluble colourless crystalline compound used to treat tuberculosis. Formula: C6H7N3O
Word Origin
C20 isoni(cotinic acid hydr)azid(e)
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
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isoniazid in Medicine

isoniazid i·so·ni·a·zid (ī'sə-nī'ə-zĭd)
n.
An antibacterial compound used in the treatment of tuberculosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for isoniazid

drug used in the treatment and prevention of tuberculosis. Isoniazid commonly is used in combination with other drugs, such as rifampin, ethambutol, pyrazinamide, or streptomycin; these drugs are used with isoniazid in order to prevent, or at least delay, the development of isoniazid-resistant strains of tuberculin bacilli. Treatment usually is continued for many months. The most important drug in the therapy of tuberculosis, isoniazid was introduced into medicine in 1952; it usually is administered orally, but it can be given by injection. Side effects may include hepatitis (especially in older patients), peripheral neuropathy, dizziness, and headache.

Learn more about isoniazid with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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