Merriam-Webster's Collegiate® Dictionary, 11th Edition
REPOSITORY
I. noun (plural -ries)
Date: 15th century
a place, room, or container where something is deposited or stored ; depository , a side altar in a Roman Catholic church where the consecrated Host is reserved from Maundy Thursday until Good Friday, one that contains or stores something nonmaterial , a place or region richly supplied with a natural resource, a person to whom something is confided or entrusted,
II. adjective
Date: 1950
designed to act over a prolonged period