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The Collaborative International Dictionary
Aggrade

Aggrade \Ag*grade"\, v. t. [imp. & p. p. Aggraded; p. pr. & vb. n. Aggrading.] (Phys. Geog.) To bring, or tend to bring, to a uniform grade, or slope, by addition of material; as, streams aggrade their beds by depositing sediment.

Wiktionary
aggrade

vb. (context transitive geology English) to raise the level of a river bed by the deposition of sediment

WordNet
aggrade

v. build up to a level by depositing sediment [ant: degrade]

Usage examples of "aggrade".

And currents should begin an aggrading action now -- dropping sediment -- rather than degrading.

And currents should begin an aggrading action now -- dropping sediment -- rather than degrading.