'acrosarc' originates from Greek, specifically the word 'akros' meaning 'topmost' and 'sark' meaning 'flesh'.

'akros' and 'sark' combined in Greek to form 'akrosarkos', which eventually became the modern English word 'acrosarc'.

Initially, it meant 'topmost flesh', but over time it evolved into its current meaning of a specific biological structure.