'amphithyron' originates from Greek, specifically the word 'ἀμφίθυρον', where 'amphi-' meant 'both' and 'thyra' meant 'door'.

'ἀμφίθυρον' was used in ancient Greek architecture to describe a double door, and eventually became the modern English word 'amphithyron'.

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