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Definition of Sulphamic acid
1. Noun. (chemistry) the acid formally derived from sulphuric acid by replacing a hydroxyl (-OH) group by an amino (-NH2) group - SO2(OH)(NH2) ¹
2. Noun. (chemistry) any organic compound derived from sulphamic acid by replacing one or two hydrogen atoms of the amine group by an organic radical — for example cyclamic acid where a hydrogen atom is replaced by a cyclohexyl radical ¹
¹ Source: wiktionary.com