• synonyms


[uh-loo-vee-uh l]
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  1. of or relating to alluvium.
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  1. alluvial soil.
  2. Australia. gold-bearing alluvial soil.
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Origin of alluvial

First recorded in 1795–1805; alluvi(um) + -al1
Related formsnon·al·lu·vi·al, adjective, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for alluvial

Contemporary Examples

Historical Examples

  • The Alluvial Lands, which may be subdivided into the cotton and cane districts.

    The Negro Farmer

    Carl Kelsey

  • The city was built in the midst of an alluvial country, far removed from the hills.

  • The alluvial soil of these islands is a marvel of fertility.

    Holland, v. 1 (of 2)

    Edmondo de Amicis

  • The town lay at the sea's edge on a strip of alluvial coast.

  • It was an alluvial town, called Soledad, where there was no harbour or future or recourse.

British Dictionary definitions for alluvial


  1. of or relating to alluvium
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  1. another name for alluvium
  2. Australian and NZ alluvium containing any heavy mineral, esp gold
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for alluvial


1802, from Latin alluvius "alluvial" (see alluvium) + -al (1).

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Online Etymology Dictionary, © 2010 Douglas Harper

alluvial in Science


Plural alluviums alluvia
  1. Sand, silt, clay, gravel, or other matter deposited by flowing water, as in a riverbed, floodplain, delta, or alluvial fan. Alluvium is generally considered a young deposit in terms of geologic time.
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Related formsalluvial adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.