Definition of alluvium
plural al·lu·vi·ums or -via \-vē-ə\
: clay, silt, sand, gravel, or similar detrital material deposited by running water
Origin of alluvium
Medieval Latin, alteration of Latin alluvio
First Known Use: circa 1656
Learn More about alluvium
Britannica.com: Encyclopedia article about "alluvium"
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