aggrade
verb
ag·grade
| \ ə-ˈgrād, a-\
-ed/-ing/-s
Definition of aggrade
: to fill with detrital material
silt has aggraded the river bed and waterlogged it for a hundred miles— Erna Fergusson
: to build up by aggradation
meltwater streams were aggrading beyond the moraines— R. J. Lougee
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