one of the major library collections in the world, located in Washington, D.C., and functioning in some ways as the national library of the U.S. although not officially designated as such: established by Congress in 1800 for service to its members, but now also serving government agencies, other libraries, and the public.
The largest library in the United States, located in Washington, D.C., and maintained largely by federal appropriations. Its original purpose was to provide research facilities for members of Congress; today it serves the public as well. Most copyrighted publications are catalogued by the Library of Congress, whose classification system is used by major libraries around the country.
noun, Library Science. 1. a system for classifying books and other materials, using for its notation both letters and numerals to allow for expansion: originally developed at the Library of Congress for classifying its books and subsequently adopted by other libraries.
noun 1. a white, smooth paste for paper and lightweight cardboard.
noun 1. the study of the organization and administration of a library and of its technical, informational, and reference services.
noun, (used with a plural verb) 1. a folding stepladder, especially one folding into another piece of furniture, as a table or chair.