ˌsəlˈfäkˌsōn- noun
Etymology: sulfoxone alteration (influenced by ox- ) of sulfone
: a crystalline salt SO 2 (C 6 H 4 NHCH 2 SO 2 Na) 2 made by the condensation of diaminodiphenyl sulfone and sodium formaldehydesulfoxylate and used in the treatment of leprosy