ALLUVION
flood, inundation, deluge, alluvion
(noun) the rising of a body of water and its overflowing onto normally dry land; “plains fertilized by annual inundations”
alluvion
(noun) gradual formation of new land, by recession of the sea or deposit of sediment
Source: WordNet® 3.1
Etymology
Noun
alluvion (countable and uncountable, plural alluvions)
(legal) The increase in the area of land due to the deposition of sediment (alluvium) by a river.
Source: Wiktionary
Al*lu"vi*on, n. Etym: [F. alluvion, L. alluvio, fr. alluere to wash
against; ad + luere, equiv. to lavare, to wash. See Lave.]
1. Wash or flow of water against the shore or bank.
2. An overflowing; an inundation; a flood. Lyell.
3. Matter deposited by an inundation or the action of flowing water;
alluvium.
The golden alluvions are there [in California and Australia] spread
over a far wider space: they are found not only on the banks of
rivers, and in their beds, but are scattered over the surface of vast
plains. R. Cobden.
4. (Law)
Definition: An accession of land gradually washed to the shore or bank by
the flowing of water. See Accretion.
Source: Webster’s Unabridged Dictionary 1913 Edition