Share this entry
isoniazid Line breaks: iso|nia¦zid
Pronunciation: /ˌʌɪsə(ʊ)ˈnʌɪəzɪd/

Definition of isoniazid in English:


[mass noun] Medicine
A synthetic compound used as a bacteriostatic drug, chiefly to treat tuberculosis.
Example sentences
  • Even the addition of a bactericidal drug streptomycin to isoniazid only resulted in a marginal increase to 49 per cent.
  • Most patients with latent tuberculosis are treated with isoniazid administered daily for nine months.
  • Drug susceptibility patterns to isoniazid and rifampicin by the conventional method showed complete association with E-test results.


1950s: from iso- 'equal' + ni(cotinic) + (hydr)azine + -ide.

Definition of isoniazid in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources