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.
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How to use alluvium in a sentence
In his wanderings, he had panned the alluvium of many small streams and had recovered more than the usual amount of gold.David Lannarck, Midget | George S. Harney
Perhaps the alluvium of a great river like the McKenzie, has determined this displacement.The Ethnology of the British Colonies and Dependencies | Robert Gordon Latham
The soil of Egypt is, then, simply an alluvium mixed with the sand which the winds bring from the Desert.The Desert World | Arthur Mangin
alluvium, al-lū′vi-um, n. the mass of water-borne matter deposited by rivers on lower lands:—pl.
The shores of Lake St. Clair are formed of a fertile alluvium, resting on drift.Summary Narrative of an Exploratory Expedition to the Sources of the Mississippi River, in 1820 | Henry Rowe Schoolcraft
British Dictionary definitions for alluvium
a fine-grained fertile soil consisting of mud, silt, and sand deposited by flowing water on flood plains, in river beds, and in estuaries
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 alluvium
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.
- alluvial adjective
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