'adelomorphic' originates from Greek, specifically the word 'adelos,' where 'a-' meant 'not' and 'delos' meant 'clear or visible,' combined with 'morphic' from 'morphe' meaning 'form.'

'adelomorphic' was directly derived from Greek roots without significant transformation through other languages.

Initially, it meant 'not clearly formed,' and this meaning has largely remained the same in modern usage.