'aegipan' originates from Greek, specifically the word 'Aigipan', where 'aigi-' meant 'goat' and 'pan' referred to the god Pan.

'Aigipan' transformed into the Latin word 'Aegipan', and eventually became the modern English word 'aegipan'.

Initially, it referred to a specific mythological creature, and this meaning has largely remained the same in modern usage.