PS

PS, P.S., ps, and other variants may refer to:

Chemistry

• Chloropicrin, a highly toxic chemical compound
• Phosphatidylserine, a phospholipid
• Phosphorothioate (or Thiophosphate), a family of compounds and anions with the general chemical formula PS_4-xO_x³⁻ (x = 0, 1, 2, or 3).
• Polystyrene, a common type of plastic
• Ps, Positronium, pseudo-chemical symbol

Computers and technology

• Adobe Photoshop, a graphics editor and creator by Adobe
• MPEG program stream, an MPEG-2 container format
• Parametric Stereo, feature used in digital audio
• PostScript, a page description language
• .ps, filename extension for a file in PostScript format
• ps (Unix), an application that displays statistics on running processes
• .ps, the State of Palestine Internet domain extension or top-level domain (ccTLD)
• PS Power and Sample Size, an interactive computer program for power and sample size calculations
• Windows PowerShell, a command line scripting and system management shell for Microsoft Windows

Engineering

• P_s or Static pressure is used in fluid mechanics and aviation

Entertainment, music and literature

• P.S. (album), a compilation album of film music by Goran Bregovic
• P.S. (film), a 2004 film
• P.S. (A Toad Retrospective), a compilation album of music by Toad the Wet Sprocket
• PS Classics, a record label
• PS Publishing from the U.K.
• "PS", 2003 song by The Books from the album The Lemon of Pink

Games

• PlayStation, a series of video game consoles developed by Sony Computer Entertainment

Medical

• Panayiotopoulos syndrome, a childhood seizure disorder
• Progeroid syndromes, a group of rare diseases causing premature aging
• Pulmonary stenosis or pulmonic stenosis, obstruction of the pulmonary artery of the heart

Places

• Palau, FIPS PUB 10-4 territory code
• Police station, abbreviated to "PS" in British police slang
• Proton Synchrotron, a 1959 particle accelerator at CERN
• State of Palestine, ISO 3166 country code
• Plaza Singapura,shopping centre of Singapore

Political parties

• Parti Socialiste (disambiguation), French
• 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

Religion

• Ps, for pastors, ministers in some Christian churches
• Ps., abbreviation for Psalms, a book in the Tanakh and Christian Bibles

Transportation

• PS, prefix used to identify a vessel as a paddle steamer
• Pacific Southwest Airlines, IATA designator of former airline
• Ukraine International Airlines, IATA airline designator

Units

• Petasecond (Ps), 10¹⁵ seconds, SI unit of time
• Pferdestärke (PS), abbreviation of the German term for metric horsepower
• Picosecond (ps), 10⁻¹² second, SI unit of time
• Picosiemens (pS), SI unit of electric conductance

Writing and linguistics

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

Other uses

• Prefix for US public school (government funded), e.g., P.S. 45
• iPhrothiya yeSiliva (PS) South African Military Award

See also

• P.S. I Love You (disambiguation)