aggrade

[ uh-greyd ]

Phonetic (Standard)IPA

verb (used with object)

, Physical Geography.

, ag·grad·ed, ag·grad·ing.

to raise the grade or level of (a river valley, a stream bed, etc.) by depositing detritus, sediment, or the like.

aggrade

/ ˌæɡrəˈdeɪʃən; əˈɡreɪd /

See degrade
tr to build up the level of (any land surface) by the deposition of sediment Compare degrade

Origin of aggrade¹

First recorded in 1895–1900; ag- + grade

In this way they aggrade each portion of it in turn by means of their shifting channels.

Its deposits tend to aggrade (build up) the flat which its meanderings develop.

April 18, 2024petrichor

[pet-ri-kawr]

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