Etymology of the Latin word alluvius
the Latin word alluvius (alluvial, from river overflow, deposit)
derived from the Late Latin word alluere (wash, flow past, near)
using the Latin prefix ad- (to, in addition)
derived from the Latin word ad (to; near; to; to; to; near)
derived from the Latin word luere (atone, make amends for, expiate; fulfill , make good; discharge; pay; pay fine, compensate; wash, lave; cleanse)
using the Latin suffix -luere