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Synonyms

alluvial plain

American  

noun

  1. a level or gently sloping surface formed of sediments laid down by streams, generally during flooding.

Etymology

Origin of alluvial plain

First recorded in 1955–60

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.