'acrophonically' originates from Greek, specifically the word 'akrophōnia,' where 'akro-' meant 'top' or 'beginning' and 'phōnē' meant 'sound.'

'akrophōnia' transformed into the English word 'acrophonic,' and eventually became the modern English word 'acrophonically.'

Initially, it meant 'using the initial sound of a word,' and this meaning has largely remained the same in modern usage.