Definition of "isoniazid" [isoniazid]

• A crystalline antibacterial compound, C6H7N3O, used in the treatment of tuberculosis. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The goal in Zambia is to explore ways of helping people recognise active TB cases; in South Africa and Brazil researchers will test the cost and effectiveness of a treatment programme called isoniazid preventive therapy."
• "More than a quarter of people diagnosed with TB in one region of northwestern Russia in 2008 had a form of the disease not treatable with rifampin and another generic antibiotic called isoniazid, the WHO said in March."
• "The standard medication for T. B is the monoamine oxidase inhibitor, isoniazid, which is also an antidepressant, and thus capable of wearing out its welcome."