Breadcrumb Home > Dictionary > Index I isonicotinic acid hydrazide: Meaning and Definition of Find definitions for: i'so•nic•o•tin'ic ac'id hy'dra•zide Pronunciation: (ī'su-nik"u-tin'ik&wdspchī'dru-zīd", -zid), [key] — Pharm. Pharm. isoniazid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. isoniazid isonomy TrendingHere are the facts and trivia that people are buzzing about. Hard Labor Current Events This Week: June 2023 Languages Spoken in Each Country of the World User's Guide to Environmental Language The Washington Monument: Facts, History & Profile LGBT Pride Month | Biographies of Notable Individuals Civilian Labor Force ✖ Related Content Daily Word Quiz: poetaster Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language