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aggrade

(ə grād′)

transitive verb aggraded, aggrading

to build up the level or slope of (a river bed, valley, etc.) by the deposit of sediment

Origin: ag- (var. of ad-) + grade

Related Forms:

aggradation noun

See aggrade in American Heritage Dictionary 4

transitive verb ag·grad·ed, ag·grad·ing, ag·grades

To fill and raise the level of (the bed of a stream) by deposition of sediment.

Related Forms:

agˌgra·daˈtion (ăgˌrə-dāˈshən) noun

agˌgra·daˈtion·al adjective

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