- [noun] gradual formation of new land, by recession of the sea or deposit of sediment
- [noun] the rising of a body of water and its overflowing onto normally dry land; "plains fertilized by annual inundations"
Synonyms: flood, inundation, deluge
- [noun] clay or silt or gravel carried by rushing streams and deposited where the stream slows down
Synonyms: alluvial sediment, alluvial deposit, alluvium
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