Physician-assisted suicide

Positron annihilation spectroscopy, a spectroscopic technique

post-abortion syndrome

Personalized Amplification System, a family of products produced by Bose

Parental alienation syndrome

Public address system

PAS (political party) (Parti Islam Se-Malaysia or Islamic Party of Malaysia), a Malaysian political party

PAS Tehran F.C., a defunct Iranian football club from Tehran

Power-assisted steering, or power steering, in automobiles

PAS Giannina, a Greek football club from Ioannina

Port Auxiliary Service, the successor to the British Admiralty Yard Craft Service

Personal Access System, a wireless telephone standard

Proceedings of the Aristotelian Society, a philosophical journal

Pascal, a common file extension (.pas) for the Pascal programming language

Polyarylsulfone, a thermoplastic

Para-aminosalicylic acid, an old treatment for tuberculosis

Media Vision Pro AudioSpectrum, a family personal computer sound cards made by Media Vision in the 1990s

PAS Hamedan F.C., an Iranian football club from Hamedan

Publicly Available Specification, a formal British standards document (sometimes inaccurately referred to as Publicly Available Standard)

Pioneer Academy of Science

PanAmSat, a defunct satellite service provider

Percussive Arts Society

PepsiAmericas, Inc. NYSE: PAS is the second-largest bottler of Pepsi-Cola products, and also contracts to produce beverages for Cadbury-Schweppes and smaller regional brands. PepsiCo, Inc. holds a 41.1% stake in the company, which has 19 bottling...

Portable Antiquities Scheme

Polish Academy of Sciences

Pump action shotgun

Partido Alianza Social, a former Mexican political party

Periodic acid-Schiff reaction, a staining method for carbohydrates in light microscopy

Pas River, in Spain

Process automation system

Patient administration system