aggrade

verb

ag·​grade

ə-ˈgrād,

a-

-ed/-ing/-s

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

Word History

Etymology

ad- + -grade (as in degrade entry 1)

First Known Use

1893, in the meaning defined at transitive sense

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