sulfisoxazole

[ suhl-fi-sok-suh-zohl ]
/ ˌsʌl fɪˈsɒk səˌzoʊl /

noun Pharmacology.

a white to yellowish, crystalline, slightly bitter sulfonamide, C11H13N3O3S, used chiefly in the treatment of infections of the urinary tract.

Origin of sulfisoxazole

1960–65; sulf(onamide) + isoxazole; see is-, ox-, azole