'aminohydrolase' originates from 'amino' and 'hydrolase', where 'amino' refers to the amino group in chemistry and 'hydrolase' refers to an enzyme that catalyzes the hydrolysis of a chemical bond.

'aminohydrolase' is a modern scientific term formed by combining 'amino' and 'hydrolase'.

Initially, it referred to enzymes involved in hydrolysis, and this meaning has remained consistent in modern usage.