'amphithura' originates from Greek, specifically the word 'ἀμφίθυρα', where 'amphi-' meant 'both' and 'thura' meant 'door'.

'ἀμφίθυρα' changed from the Greek word 'amphithyra' and eventually became the modern English word 'amphithura'.

Initially, it meant 'a door with two leaves', but over time it evolved into its current meaning of 'a type of ancient double door or gate'.