ISONIAZID /ˌaɪsəʊˈnaɪəzɪd/ Scrabble 19 Words With Friends 20 Scrabble letter values: I1S1O1N1I1A1Z10I1D2 = 19 Definition noun antibacterial drug (trade name Nydrazid) used to treat tuberculosis. — synonyms: INH, Nydrazid See all 82 words you can make from ISONIAZID → 9-letter words Words starting with I Words ending with D ← Unscramble different letters