PS

PS, ps, and other variants may refer to:

Writing and linguistics

• Postscript, writing added after the main body of a letter
• Pashto language, ISO 639 alpha-2 language code

Entertainment, music and literature

• Priory of Sion (Prieuré de Sion), a French fringe group and its fictitious predecessor and successor organisations
• PS Classics, a record label
• P.S., a 2004 film
• P.S. (A Toad Retrospective), a compilation album of music by Toad the Wet Sprocket
• P.S. (album), a compilation album of film music by Goran Bregovic
• "PS", 2003 song by The Books from the album The Lemon of Pink

Computers and technology

• .ps, the Palestinian Internet domain extension or top-level domain (ccTLD)
• ps (Unix), an application that displays statistics on running processes
• Packet switching (or packet-switched), a form of telecommunications
• Parametric Stereo, Audio Object Type defined and used in MPEG-4 Part 3 (MPEG-4 Audio) to further enhance efficiency in low bandwidth stereo media
• PostScript, a page description language
• Adobe Photoshop, a graphics editor and creator by Adobe
• MPEG program stream, an MPEG-2 container format
• Windows PowerShell, a Microsoft application
• Power supply

Chemistry

• Phosphatidylserine, a phospholipid
• Polystyrene, a common type of plastic
• Porous silicon
• Chloropicrin, a highly toxic chemical compound
• Ps, Positronium, pseudo-chemical symbol

Units

• Ps, picosecond, an SI unit of time equivalent to 10⁻¹² of a second, standard abbreviation ps (uncapitalized)
• PS, the German abbreviation for the word Pferdestärke, meaning horsepower
• Peta second, an SI unit of time equivalent to 10¹⁵ seconds
• Picosiemens, an SI unit of electric conductance based on the siemens

Transportation

• United p.s., a "Premium Service" offered by United Airlines
• Paddle steamer, a steamboat or steamship operated by paddle propulsion
• Ukraine International Airlines, IATA airline designator
• Pacific Southwest Airlines, defunct airline that formerly used the IATA airline designator

Places

• Palau, FIPS PUB 10-4 territory code
• Palestinian territories, ISO 3166 country code
• Proton Synchrotron, a 1959 particle accelerator at CERN

Religion

• Ps, for Pastor, a minister in a Pentecostal Christian Church
• Ps., abbreviation for Psalms, a book in the Tanakh or Christian Bible

Political parties

• Parti Socialiste (disambiguation), Parti Socialiste
• Partido Socialista (disambiguation), Spanish and Portuguese
• Partito Socialista (disambiguation), Italian
• Positive Slovenia
• Social Democratic Party (Andorra) Partit Socialdemòcrata
• Socialist Party of Albania Partia Socialiste
• Socialist Party of Chile Partido Socialista de Chile
• Socialist Party of Romania Partidul Socialist [din România]
• True Finns Perussuomalaiset

Companies and organizations

• Pacific Securities, Kunming, Yunnan
• PeopleSoft, an ERP software company
• PeopleSupport, a Los Angeles-based business process outsourcing company

Games

• Pet Society, internet social game by Playfish
• Phantasy Star (series), series of RPG games by SEGA
• PlanetSide, a MMOFPS by Sony
• PlayStation, a series of video game consoles developed by Sony Computer Entertainment
• Pokémon Gold and Silver, a Game Boy Color video game
• Pokémon Ruby and Sapphire, a Game Boy Advance video game
• Pokémon Snap, a Nintendo 64 video game
• Pokémon Stadium, a Nintendo 64 video game
• Pokémon Stadium 2, a Nintendo 64 video game

Other uses

• Public school (government funded), e.g., P.S. 45
• Police Sergeant
• Pyramid scheme, tricking people into making money for a company/individual through obligations and false pretenses of mutual gain

Medical

• Pulmonary stenosis (known also as pulmonic stenosis)

See also

• P.S. I Love You (disambiguation)