<library> (OCLC) A nonprofit membership organisation offering computer-based services and research to libraries, educational organisations, and their users. OCLC operates the OCLC Cataloging PRISM service for cataloging and resource sharing, provides on-line reference systems for both librarians and end-users, and distributes on-line electronic journals. OCLC's goals are to increase the availability of library resources and reduce library costs for the fundamental public purpose of furthering access to the world's information. The OCLC library information network connects more than 10,000 36,000 libraries worldwide. Libraries use the OCLC System for cataloguing, interlibrary loan, collection development, bibliographic verification, and reference searching. Their most visible feature is the OCLC Online Union Catalog (OLUC) WorldCat (the OCLC Online Union Catalog).