The Collaborative International Dictionary
Aggraded
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
aggraded
vb. (en-past of: aggrade)