alluvion
/əˈl(j)uːvɪən
/noun [mass noun] chiefly Law
The action of the sea or a river in adding to the area of land by deposition. Compare with avulsion.We studied the genesis and properties of soils in alluvial areas known to be reclaimed by the alluvion system about 100 years ago, and compared these soils with natural, adjacent alluvial soils....
- We concluded that it would be consistent with the doctrines of alluvion and avulsion if ownership of the land in question was not affected by reclamation.
Origin
Mid 16th century (originally denoting a flood, especially one carrying suspended material which is then deposited): from French, from Latin alluvio(n-), from ad- 'towards' + luere 'to wash'.