Think of a repository as a storehouse, a place where things are kept until needed. A silo is a repository for animal feed, and a trivia buff's mind is a repository for useless information.

The noun repository has a somewhat formal ring to it — why not just call a storehouse a storehouse, right? Think of a repository as somewhat more important and imposing than just a place to dump stuff. It has more of an air of authority, like the things stored there could change the world. Consider nuclear waste — would you rather store it in a dump or a repository? I don’t know about you, but I'd prefer the latter—sounds safer.

Primary Meanings of repository

a facility where things can be deposited for storage or safekeeping
a person to whom a secret is entrusted
Full Definitions of repository

n a facility where things can be deposited for storage or safekeeping

deposit, depositary, depository
Hagia Sophia
a 6th century masterpiece of Byzantine architecture in Istanbul; built as a Christian church, converted to a mosque in 1453, and made into a museum in the middle of the 20th century
Louvre Museum
an art museum that is a famous tourist attraction in Paris
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a depository containing historical records and documents
bank, bank building
a building in which the business of banking transacted
a central depository where things can be left or picked up
depository library, library
a depository built to contain books and other materials for reading and study
repository in a public building where lost articles can be kept until their owners reclaim them
a depository for collecting and displaying objects having scientific or historical or artistic value
a storehouse where a stock of things is kept
sperm bank
a depository for storing sperm
depot, entrepot, storage, store, storehouse
a depository for goods
a depository (a room or building) where wealth and precious objects can be kept safely
athenaeum, atheneum
a place where reading materials are available
an office of archives for public or ecclesiastic records; a court of public records
a place where supplies can be stored
garner, granary
a storehouse for threshed grain or animal feed
circulating library, lending library
library that provides books for use outside the building
magazine, powder magazine, powder store
a storehouse (as a compartment on a warship) where weapons and ammunition are stored
a drop where mail can be deposited
a railroad depot in a theater of operations where military supplies are unloaded for distribution
science museum
a museum that collects and displays objects having scientific interest
treasure house
a storehouse for treasures
storage warehouse, warehouse
a storehouse for goods and merchandise
Type of:
facility, installation
a building or place that provides a particular service or is used for a particular industry

n a burial vault (usually for some famous person)

Type of:
burial chamber, sepulcher, sepulchre, sepulture
a chamber that is used as a grave

n a person to whom a secret is entrusted

Type of:
confidant, intimate
someone to whom private matters are confided

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