sulfathiazole
noun
sul·fa·thi·a·zole
variants:
or chiefly British sulphathiazole \ ˌsəl-fə-ˈthī-ə-ˌzōl 
\
\
Medical Definition of sulfathiazole
: a sulfa drug C9H9N3O2S2 derived from thiazole and sulfanilamide that is seldom prescribed because of its toxicity but was formerly used especially in the treatment of pneumococcus and staphylococcus infections