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devolution (n.)

1540s, in reference to property, qualities, etc., "descent by natural or due succession," agent noun from devolve. Meaning "act of transferring or handing over" is from 1620s. Etymological sense "act of rolling down" (1620s) was rare in English and is archaic or obsolete. In biology, as "degeneration, the opposite of evolution," it is attested by 1882.

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Definitions of devolution from WordNet

devolution (n.)
the process of declining from a higher to a lower level of effective power or vitality or essential quality;
Synonyms: degeneration
devolution (n.)
the delegation of authority (especially from a central to a regional government);
Synonyms: devolvement
From wordnet.princeton.edu