• synonyms


[kuh-loo-vee-uh m]
noun, plural col·lu·vi·a [kuh-loo-vee-uh] /kəˈlu vi ə/, col·lu·vi·ums. Geology.
  1. loose earth material that has accumulated at the base of a hill, through the action of gravity, as piles of talus, avalanche debris, and sheets of detritus moved by soil creep or frost action.
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Origin of colluvium

1935–40; < New Latin, equivalent to Latin colluv-, base of colluere to wash out (see collutory) + -ium -ium, on the model of Latin alluvium alluvium, dīluvium deluge
Related formscol·lu·vi·al, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for colluvial

Historical Examples of colluvial

  • Clays transported in this way are termed by Ries colluvial clays, the term 'diluvial' is generally employed in this country.

    The Natural History of Clay

    Alfred B. Searle

British Dictionary definitions for colluvial


noun plural -via (-vɪə) or -viums
  1. a mixture of rock fragments from the bases of cliffs
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Derived Formscolluvial, adjective

Word Origin for colluvium

Latin: collection of filth, from colluere to wash thoroughly, from com- (intensive) + luere to wash
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

colluvial in Science


Plural colluviums colluvia
  1. A loose deposit of rock debris accumulated through the action of rainwash or gravity at the base of a gently sloping cliff or slope.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.