Dictionary.com

isoniazid

[ ahy-suh-nahy-uh-zid ]
/ ˌaɪ səˈnaɪ ə zɪd /
Save This Word!

noun Pharmacology.
a white, crystalline, water-soluble solid, C6H7N3O, used in the treatment of tuberculosis.
QUIZ
WILL YOU SAIL OR STUMBLE ON THESE GRAMMAR QUESTIONS?
Smoothly step over to these common grammar mistakes that trip many people up. Good luck!
Question 1 of 7
Fill in the blank: I can’t figure out _____ gave me this gift.

Origin of isoniazid

First recorded in 1950–55; short for isonicotinic acid hydrazide
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for isoniazid

isoniazid
/ (ˌaɪsəʊˈnaɪəzɪd) /

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

Word Origin for isoniazid

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
FEEDBACK