1. Gradual formation of new land, by recession of the sea or deposit of sediment 
2. The rising of a body of water and its overflowing onto normally dry land
   - flood, inundation, deluge 
3. Clay or silt or gravel carried by rushing streams and deposited where the stream slows down
   - alluvial sediment, alluvial deposit, alluvium

Derived forms: alluvions

Type of: deposit, geologic process, geological phenomenon, geological process, sediment

Encyclopedia: Alluvion

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