early 15c., "to roll down," from Latin devolvere "to roll down," from de- (see de-) + volvere "to roll," from PIE root *wel- (3) "to turn, revolve." Figurative sense of "to cause to pass down" is from 1520s. Related: Devolved; devolving. Also in same sense was devolute (1530s), from Latin devolutus, past participle of devolvere.
Web design and development by MaoningTech.