operating system | Super Nintendo Entertainment System | Nintendo Entertainment System | Android (operating system) | Los Alamos National Laboratory | Jet Propulsion Laboratory | Global Positioning System | Solar System | X Window System | Information Technology | Oak Ridge National Laboratory | United States Information Agency | Korean Broadcasting System | Lawrence Berkeley National Laboratory | Information technology | System of a Down | National Center for Biotechnology Information | Lawrence Livermore National Laboratory | information technology | Domain Name System | Seoul Broadcasting System | North Carolina Community College System | Argonne National Laboratory | Mutual Broadcasting System | Bulletin board system | system | Turner Broadcasting System | Program and System Information Protocol | Geographic information system | Brookhaven National Laboratory |
Accession number (medicine), a unique identifier for an order, used in medical information systems like a LIS or RIS.