NATIONAL LIBRARY OF MEDICINE

The United States National Library of Medicine (NLM), operated by the United States federal government, is the world's largest medical library. The collections of the National Library of Medicine include more than seven million books, journals, technical reports, manuscripts, microfilms, photographs, and images on medicine and related sciences, including some of the world's oldest and rarest works.
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Noun
1. the world's largest medical library
(synonym) United States National Library of Medicine, U.S. National Library of Medicine
(hypernym) library
(part-holonym) National Institutes of Health, NIH