aggrade

American  

[uh-greyd] / əˈgreɪd /

verb (used with object)

Physical Geography.

aggraded, aggrading

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

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aggrade British  

/ ˌæɡrəˈdeɪʃən, əˈɡreɪd /

verb

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

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Other Word Forms

• aggradation
  noun
• aggradational
  adjective

Etymology

Origin of aggrade

First recorded in 1895–1900; ag- + grade

Example Sentences

See Examples For:

aggrade aggraded aggrading

After building this sheet of waste the streams ceased to aggrade and began the work of destruction.

From The Elements of Geology by Norton, William Harmon

So it was settled, an' as Dooley didn't have the money, the widdys aggrade to take their pay some other way.

From Irish Wonders by McAnally, D. R. (David Russell)

So she aggrade to do her best, an' gev her a little bag to carry wid 'erbs in it, an' writ some words on two bits av paper an' the same in Latin.

From Irish Wonders by McAnally, D. R. (David Russell)

But he wanted her, an' his father an' O'Moore put their heads together over a glass an' aggrade that the young wans 'ud be married.

From Irish Wonders by McAnally, D. R. (David Russell)

So they all aggrade, an' wint home at wanst to get ready fur the shports.

From Irish Wonders by McAnally, D. R. (David Russell)

Valley trains are deposits of stratified drift with which river valleys have been aggraded.

From The Elements of Geology by Norton, William Harmon

Since glacial streams are well loaded with waste due to vigorous ice erosion, the valley in front of the glacier is commonly aggraded to a broad, flat floor.

From The Elements of Geology by Norton, William Harmon

The S.E. corner of Arizona is a region of greatly eroded ranges and gentle aggraded valleys.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" by Various

The aggraded channels then came to stand out as ridges.

From The Geography of the Region about Devils Lake and the Dalles of the Wisconsin by Atwood, Wallace W.

In this way each part of the fan is aggraded and its symmetric form is preserved.

From The Elements of Geology by Norton, William Harmon

Results of Glacial Action.—A glacier is a degrading and an aggrading agent.

From Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" by Various

Flood-plain deposits of great thickness may be built by aggrading rivers even in valleys whose rock floors have never been thus widened.

From The Elements of Geology by Norton, William Harmon

In either case the stream continues aggrading or degrading until a new gradient is found where the velocity is just sufficient to move the load, and here again it reaches grade.

From The Elements of Geology by Norton, William Harmon

However, I believe students of agriculture will agree with me that deforestation, increased erosion, and aggrading gravel banks probably drove the folk out of Saylla.

From Inca Land Explorations in the Highlands of Peru by Bingham, Hiram

While aggrading streams thus tend to shift their channels, degrading streams, on the contrary, become more and more deeply intrenched in their valleys.

From The Elements of Geology by Norton, William Harmon