sulfayoudaoicibaDictYouDict[sulfa 词源字典]
1942, short name for the group of drugs derived from sulfanilamide ("amide of sulfanilic acid," 1937, which is so called because it is a sulphonic derivative of the dye-stuff aniline), and shortened from that word. The usual British English spelling is sulpha.[sulfa etymology, sulfa origin, 英语词源]