'angiotensinase' originates from English, specifically the combination of 'angiotensin' and the enzyme suffix '-ase', where 'angiotensin' refers to a peptide hormone and '-ase' denotes an enzyme.

'angiotensinase' was formed in modern scientific English by combining 'angiotensin' and '-ase' to describe enzymes that act on angiotensin.

Initially, it meant 'an enzyme that breaks down angiotensin', and this meaning has remained unchanged in modern usage.