alluvial deposit(n = noun.object) alluvial sediment, alluvion, alluvium - clay or silt or gravel carried by rushing streams and deposited where the stream slows down; Array
is a kind of deposit, sediment
has particulars: delta, placer

alluvial, alluvial cone, alluvial fan, alluvial sediment, alluvial soil, bank deposit, certificate of deposit, demand deposit, deposit, deposit account, deposit box, federal deposit insurance corporation, safety deposit box, security deposit, time deposit, time deposit account