PACS

PACS is an acronym with several meanings:

• Pacte civil de solidarité, a form of civil union in France
• Palo Alto Chinese School, Palo Alto, Calif.
• Partial Anterior Circulation Stroke Syndrome, the symptoms of a type of an ischemic stroke
• Peace and conflict studies, an academic field that identifies and analyzes violent and nonviolent behaviors of social conflicts
• Physics and Astronomy Classification Scheme, a scheme developed by the American Institute of Physics
• Picture archiving and communication system, a digital medical image management, communication, review and distribution system
• Political Action Committees (PACs), groups organized to elect or defeat political candidates
• Poorest Areas Civil Society Program (2001–2008), a defunct Indian social welfare program
• Primary airport control station, a survey marker established in the vicinity of an airport
• Provisional Army of the Confederate States, the "volunteer" or wartime-expansion component of the Confederate States Army
• Cape Sarichef Airport (ICAO airport code), on Unimak Island of the Aleutian Islands, Alaska
• Photodetecting Array Camera and Spectrometer, an instrument of the Herschel Space Observatory
• Prince Avenue Christian School, Oconee County, Ga.

PACs is the plural of PAC; for example:

• Political action committees
• Premature atrial contractions