'actiniomorpha' originates from Greek, specifically the word 'aktis' meaning 'ray' and 'morphe' meaning 'form'.

'actiniomorpha' was derived from the Greek words 'aktis' and 'morphe', and eventually became the modern English term 'actiniomorpha'.

Initially, it meant 'ray form', but over time it evolved into its current meaning of 'a group of sea anemones'.