Alluvium

n.

1.

(Geol.) Deposits of earth, sand, gravel, and other transported matter, made by rivers, floods, or other causes, upon land not permanently submerged beneath the waters of lakes or seas.

Noun

1.

alluvium - clay or silt or gravel carried by rushing streams and deposited where the stream slows down Synonyms: alluvial deposit, alluvial sediment, alluvion

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