alluvial plain


Definition of alluvial plain

1 : a level or gently sloping flat or a slightly undulating land surface resulting from extensive deposition of alluvial materials by running water
2 : a plain formed by lateral coalescence of alluvial fans a piedmont alluvial plain — compare bajada

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First Known Use of alluvial plain

1803, in the meaning defined at sense 1

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The first known use of alluvial plain was in 1803

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Cite this Entry

“Alluvial plain.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2020.

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