noun
deposit library
A library that receives materials on deposit, often from a government or organization, and is responsible for preserving them and making them accessible. In computing contexts, may refer to a digital repository.
国立国会図書館は日本の代表的な寄託図書館です。
The National Diet Library is a representative deposit library in Japan.
Compound of 寄託 (deposit, entrustment) and 図書館 (library). The exact historical derivation is uncertain; the term is used in modern library science and computing.