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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

Time Traveler
The first known use of aggrade was in 1893

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