SINCE 1828
alluvium
noun
al·lu·vi·um
| \ ə-ˈlü-vē-əm
\
\
plural alluviums
or alluvia\ -vē-ə
\
\
Definition of alluvium
: clay, silt, sand, gravel, or similar detrital material deposited by running water
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The first known use of alluvium was in 1810
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