alluvion noun. [ǝ'lu:vɪǝn, -'lju:-] arch. exc. in sense 4. M16.
[French from Latin alluvio(n-), formed as ALLUVIUM: see -ION.]
1. The wash of water against the shore or a river-bank. M16.

2. An inundation; a flood, esp. when the water carries much suspended material. M16.

3. The matter deposited by a flood or a river; alluvium. M18.

4. Law. The action of flowing water in forming new land by deposition (cf. AVULSION 3). M18.

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