alluvion
Pronunciation: /əˈl(j)uːvɪən/
noun
- the action of the sea or a river in adding to the area of land by deposition. Compare with avulsion.
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'