'alluvion' originates from Latin, specifically the word 'alluviō', where 'ad-' meant 'toward' and 'luviō' meant 'a washing'.

'alluviō' transformed into the Old French word 'alluvion', and eventually became the modern English word 'alluvion'.

Initially, it meant 'a washing or flowing', but over time it evolved into its current meaning of 'sediment deposited by water'.