'acraspeda' originates from Greek, specifically the word 'akraspedos,' where 'a-' meant 'without' and 'kraspedon' meant 'edge' or 'border.'

'akraspedos' transformed into the scientific term 'acraspeda' used in modern taxonomy.

Initially, it meant 'without an edge,' referring to the lack of a velum, and this meaning has largely remained the same in modern usage.