|səl|famik- noun
Etymology: International Scientific Vocabulary sulf- + am ide + -ic
1. : a strong crystalline acid H 2 NSO 3 H made usually by reaction of sulfuric acid, sulfur trioxide, and urea and used chiefly as a weed killer, in cleaning metals, and in the form of salts as a flameproofing or softening agent for paper and textiles : the half amide of sulfuric acid
2. : any of a group of organic derivatives RNHSO 3 H or R 2 NSO 3 H of sulfamic acid that are stable if the R represents alkyl but unstable if one R is aryl or acyl