əˈgrād, aˈ- verb
( -ed/-ing/-s )
Etymology: ad- + grade
transitive verb
: to fill with detrital material
silt has aggraded the river bed and waterlogged it for a hundred miles — Erna Fergusson
intransitive verb
: to build up by aggradation
meltwater streams were aggrading beyond the moraines — R.J.Lougee