de·pos·it 
(dĭ-pŏzĭt)
(dĭ-pŏzĭt)v. de·pos·it·ed, de·pos·it·ing, de·pos·its
v.tr.
1. To put or set down; place.
2. To lay down or leave behind by a natural process: layers of sediment that were deposited on the ocean floor; glaciers that deposited their debris as they melted.
3.
a. To give over or entrust for safekeeping.
b. To put (money) in a bank or financial account.
4. To give as partial payment or security.
v.intr.
To become deposited; settle.
n.
1. Something, such as money, that is entrusted for safekeeping, as in a bank.
2. The condition of being deposited: funds on deposit with a broker.
3. A partial or initial payment of a cost or debt: left a $100 deposit toward the purchase of a stereo system.
4. A sum of money given as security for an item acquired for temporary use.
5. A depository.
6. Something deposited, especially by a natural process, as:
a. Geology A concentration of mineral matter or sediment in a layer, vein, or pocket: iron ore deposits; rich deposits of oil and natural gas.
b. Physiology An accumulation of organic or inorganic material, such as a lipid or mineral, in a body tissue, structure, or fluid.
c. A sediment or precipitate that has settled out of a solution.
7. A coating or crust left on a surface, as by evaporation or electrolysis.
[Latin dēpōnere, dēposit-; see DEPONE.]
de·posi·tor n.