'gustatory' originates from Latin, specifically the word 'gustatorius', where the root 'gust-' from 'gustare' meant 'to taste'.

'gustatory' changed from the Latin word 'gustatorius' (derived from 'gustare') and was adopted into English in a form close to the Latin 'gustatory'.

Initially, it meant 'pertaining to tasting', and over time it has retained this meaning as 'relating to the sense or act of taste'.