1. (noun) alluvion
gradual formation of new land, by recession of the sea or deposit of sediment
Synonyms: alluvial sediment, flood, inundation, alluvial deposit, deluge, alluvium
2. (noun) flood, inundation, deluge, alluvion
the rising of a body of water and its overflowing onto normally dry land
Synonyms: alluvial sediment, waterspout, pelter, soaker, deluge, floodlight, cloudburst, rising tide, overflow, alluvial deposit, flood, downpour, alluvion, alluvium, flowage, inundation, flood tide, flood lamp, photoflood, outpouring, torrent
3. (noun) alluvial sediment, alluvial deposit, alluvium, alluvion
clay or silt or gravel carried by rushing streams and deposited where the stream slows down
Synonyms: alluvial sediment, flood, inundation, alluvion, alluvial deposit, alluvium, deluge
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Synonyms for alluvion 
