PACS

PACS is an acronym with several meanings:

• Cape Sarichef Airport (ICAO airport code), on Unimak Island of the Aleutian Islands, Alaska
• Pacte civil de solidarité, a form of civil union in France
• Palo Alto Chinese School, Palo Alto, California, USA
• Partial Anterior Circulation Stroke Syndrome, the symptoms of a type of an ischemic stroke
• Payload Alert Communications System, a system to decrease the statistical uncertainty in the location of resident space objects
• Peace and conflict studies, an academic field that identifies and analyzes violent and nonviolent behaviors of social conflicts
• Photodetecting Array Camera and Spectrometer, an instrument of the Herschel Space Observatory
• Physical Access Control Systems. Gates, barriers and turnstiles that provide security for restricted areas on buildings and sites.
• Physics and Astronomy Classification Scheme, a scheme developed by the American Institute of Physics
• Picture Archiving and Communication System, a system used in medical imaging to store, retrieve, distribute, analyze, and digitally process medical images.
• Poorest Areas Civil Society Program (2001–2008), a defunct Indian social welfare program
• Primary Agricultural Credit Society, co-operative credit institutions in India
• Primary airport control station, a survey marker established in the vicinity of an airport
• Prince Avenue Christian School, Oconee County, Georgia, USA
• Provisional Army of the Confederate States, the "volunteer" or wartime-expansion component of the Confederate States Army

PACs is the plural of PAC; for example:

• Political action committees, groups organized to elect or defeat political candidates
• Premature atrial contractions