alluvium

[ uh-loo-vee-uh m ]
/ əˈlu vi əm /

noun, plural al·lu·vi·ums, al·lu·vi·a [uh-loo-vee-uh] /əˈlu vi ə/.

a deposit of sand, mud, etc., formed by flowing water.
the sedimentary matter deposited thus within recent times, especially in the valleys of large rivers.

QUIZZES

DO YOU KNOW THIS VOCABULARY FROM "THE HANDMAID'S TALE"?

"The Handmaid's Tale" was required reading for many of us in school. Everyone else has probably watched the very popular and addictive TV show. Do you remember this vocabulary from the book, and do you know what these terms mean?
Question 1 of 10
decorum

Origin of alluvium

1655–65; < Latin, noun use of neuter of alluvius washed against, equivalent to alluv- (see alluvion) + -ius, -ium adj. suffix; see -ium
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for alluvia

  • We see clearly the alluvia of two streams converging from right and left, and uniting to pass to the sea through Brading Harbour.

  • It was only in the extra-glacial tracts that alluvia of interglacial age were at all likely to be preserved in any abundance.

  • The source of the elements which compose the Pampean alluvia is very uncertain.

  • Hence, I believe that some of our so-called “post-glacial” alluvia will eventually be assigned to an interglacial horizon.

British Dictionary definitions for alluvia

alluvium
/ (əˈluːvɪəm) /

noun plural -viums or -via (-vɪə)

a fine-grained fertile soil consisting of mud, silt, and sand deposited by flowing water on flood plains, in river beds, and in estuaries

Word Origin for alluvium

C17: from Latin; see alluvion
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

Scientific definitions for alluvia

alluvium
[ 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.

Other words from alluvium

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