from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. Simple past tense and past participle of aggrade.

from The Century Dictionary and Cyclopedia

  • In geology, more or less filled with detritus by a stream: said of a valley, basin, or bay.


Sorry, no etymologies found.


  • The lower reaches of most streams have aggraded; here, enough gravel has accumulated to promote subsurface flow, except during and immediately after rainfall.

    Ecoregions of Oklahoma (EPA)

  • Unlike visual recollection, aggraded by a million freeze-frames a day, touch was the sense of darkness.

    The Big Scam

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

    The Elements of Geology

  • Valleys aggraded with fine waste form well-nigh level plains over which streams wind from side to side of a direct course in symmetric bends known as meanders, from the name of a winding river of Asia Minor.

    The Elements of Geology

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

    The Elements of Geology

  • We may conceive, then, of the Connecticut valley and the larger trough to the southwest as basins gradually sinking at a rate perhaps no faster than that of the New Jersey coast to-day, and as gradually aggraded by streams from the neighboring uplands.

    The Elements of Geology

  • 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.

    The Elements of Geology

  • Several debris flows have aggraded the debris fan, including a large one that deposited the prominent levee at right between 1940 and 1965.

    CreationWiki - Recent changes [en]

  • When enough water starts moving, it can scour the aggraded riverbeds, sweeping surplus sediment at frightening speeds.



Log in or sign up to get involved in the conversation. It's quick and easy.