CPL meaning in Academic & Science ?

The Chicago Public Library (CPL) is the public library system that serves the City of Chicago in the U.S. state of Illinois. It consists of 80 locations, including a central library, two regional libraries, and branches distributed throughout the city's 77 Community Areas.

The American Library Association reports that the library holds 5,721,334 volumes, making it the 9th largest public library in the United States by volumes held, and the 30th largest academic or public library in the United States by volumes held. The Chicago Public Library is the second largest library system in Chicago by volumes held (the largest is the University of Chicago Library). The library is the second largest public library system in the Midwest, after the Detroit Public Library. Unlike many public libraries, CPL uses the Library of Congress cataloging classification system rather than Dewey Decimal.

In 2019, CPL became the largest public library system in the United States to eliminate fines for borrowed overdue items. All existing fines were forgiven. There will still be due dates, and patrons are still required to return items or replace them to continue their borrowing privileges.