Definition of the Library of Congress noun from the Oxford Advanced Learner's Dictionary

 

the Library of Congress

 noun
noun
BrE
 
; NAmE
 
[singular]
 
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the US national library Culture The Library of Congress was established by the US Congress in 1800 and is on Independence Avenue in Washington, DC. It now has more than 158 million books and other items. The library has the right to receive two copies of every US work published with a copyright (= legal right of ownership).
See the Oxford Advanced American Dictionary entry: the Library of Congress