PACS is an acronym with several meanings: Medicine. Post-Acute COVID-19 Syndrome. Partial Anterior Circulation Stroke Syndrome, the symptoms of a type of an ischemic stroke. Picture Archiving and Communication System, a system used in medical imaging to store, retrieve, distribute, analyze, and digitally process medical images. Organizations and establishments. Pacte civil de solidarité, a form of civil union in France. Palo Alto Chinese School, Palo Alto, California, USA. Poorest Areas Civil Society Program (2001–2008), a defunct Indian social welfare program.
https://en.wikipedia.org/wiki/PACS