evoltion - n.
1 the delegation of power, esp. by central government to local or regional administration.
2 a descent or passing on through a series of stages. b descent by natural or due succession from one to another of property or qualities.
3 the lapse of an unexercised right to an ultimate owner.
4 Biol. degeneration.

devolutionary adj. devolutionist n. [LL devolutio (as DEVOLVE)]