[ uh-loo-vee-uh l ]
/ əˈlu vi əl /


of or relating to alluvium.


alluvial soil.
Australia. gold-bearing alluvial soil.

Nearby words

  1. alluring,
  2. alluringly,
  3. allusion,
  4. allusive,
  5. allusively,
  6. alluvial fan,
  7. alluvial mining,
  8. alluvial plain,
  9. alluvion,
  10. alluvium

Origin of alluvial

First recorded in 1795–1805; alluvi(um) + -al1

Related formsnon·al·lu·vi·al, adjective, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for alluvial

British Dictionary definitions for alluvial


/ (əˈluːvɪəl) /


of or relating to alluvium


another name for alluvium
Australian and NZ alluvium containing any heavy mineral, esp gold
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).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for alluvial


[ ə-lōōvē-əm ]

Plural alluviums alluvia

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.
Related formsalluvial adjective

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.