INAHFreq.FrequencyTop 100,000Meanings1nounisonicotinic acid hydrazide; INAHMedical term for the anti-tuberculosis drug isoniazid; INAH is the common abbreviation.See also: イソニコチン酸ヒドラジドINAHは結核あいなはけっ治療かくちりょうに使つかわれる薬やく剤ざいの一ひとつです。INAH is one of the drugs used in tuberculosis treatment.