'acalepha' originates from Greek, specifically the word 'akalēphē,' where 'akalēphē' meant 'stinging nettle.'

'akalēphē' transformed into the Latin word 'acalepha,' and eventually became the modern English word 'acalepha.'

Initially, it meant 'stinging nettle,' but over time it evolved into its current meaning of 'a class of marine animals including jellyfish.'