river basin

nounPhysical Geography.
  1. the area of land drained by a river and its branches.

Origin of river basin

First recorded in 1875–80

Words Nearby river basin

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use river basin in a sentence

Scientific definitions for river basin

river basin

  1. The land area that is drained by a river and its tributaries. The Mississippi River basin, for example, is a vast area that covers much of the central United States from the central ranges of the Appalachian Mountains in the east to the eastern ranges of the Rocky Mountains in the west, funneling toward its delta in southern Louisiana and emptying into the Gulf of Mexico.

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