'aminosulphonic' originates from combining 'amino' from 'ammonia' and 'sulphonic' from 'sulfur', where 'amino' refers to the presence of an amino group and 'sulphonic' refers to the presence of a sulphonic acid group.

'aminosulphonic' was formed by combining the terms 'amino' and 'sulphonic' to describe compounds containing both functional groups.

Initially, it meant 'containing an amino and sulphonic group', and this meaning has remained consistent in modern usage.