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alluvial plain

a level or gently sloping surface formed of sediments laid down by streams, generally during flooding.
Origin of alluvial plain
1955-60 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for alluvial plain
  • Once a swampy, alluvial plain, the region now sustains.
  • The lines are drawn on the alluvial plain that descends from this valley towards the sea.
  • Sinkhole in limestone on the alluvial plain filled with trees and brush.
  • Both the alluvial plain and the river channel have been significantly modified in the last century by human activities.

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