sulphamic acidPronunciation: /sʌlˈfamɪk/ (US sulfamic acid)Definition of sulphamic acid noun [mass noun] Chemistry a strongly acid crystalline compound used in cleaning agents and to make weedkiller. Chemical formula: HOSO2NH2 Origin: mid 19th century: sulphamic from sulphur + amide + -icsulphamic acid in other Oxford dictionaries Definition of sulphamic acid in the US English dictionary
