All articles starting with P

Petersen graph

The Petersen graph is a cubic graph on 10 vertices and 15 edges, constructed by Julius Petersen in 1898 as the smallest snark in graph theory.

The Petersen House at 516 10th Street NW, Washington, D.C., is the 1849 boarding house of William and Anna Petersen where Abraham Lincoln died at 7:22 a.m. on April 15, 1865, after being shot at Ford's Theatre; now an NPS museum.

Petersfield

Petersfield, Hampshire: a South Downs market town founded in the 12th century, on the London-Portsmouth line since 1859, with a 65-minute Waterloo commute, £485,000 average house prices, and a Sunday Times 2026 top-11 South East ranking.

Petersime

Petersime is a Belgian manufacturer of incubators and hatchery equipment headquartered in Zulte, Belgium, tracing its origin to 1922, when Ira Petersime invented an early electric incubator.

Peterson (album)

Peterson is the eighth studio album by the Canadian rapper and singer Tory Lanez, released on March 7, 2025, and recorded entirely while he was incarcerated in Tehachapi, California.

Peterson Academy

Peterson Academy is an unaccredited online education platform founded by Jordan Peterson and Mikhaila Peterson in 2024, offering subscription access to eight-hour recorded lecture courses but no degrees.

Peterson Search Partners

Peterson Search Partners is the search-fund and micro-cap buyout strategy of Peterson Partners, a Salt Lake City investment firm founded by Joel Peterson in 1995.

Peterson Space Force Base

Peterson Space Force Base (Peterson SFB) is a U.S. Space Force base in Colorado Springs, Colorado, home of Space Base Delta 1, NORAD headquarters, and 111 mission partners; established 1942 and renamed for Lt. Edward J. Peterson.

Petey Pablo

Petey Pablo (Moses Barrett III), Greenville, North Carolina rapper whose 2001 Timbaland-produced anthem "Raise Up" peaked at #25 pop; also known for "Freek-a-Leek" (#7, platinum) and Ciara's "Goodies."

PETG

PETG, or polyethylene terephthalate glycol-modified, is an amorphous thermoplastic copolyester in which some ethylene glycol is replaced with CHDM, keeping it transparent and tough; the CHDM also makes it a popular, less brittle 3D printing filament.

Pethidine

Pethidine (meperidine, Demerol, Dolantin) is the first fully synthetic opioid, a 4-phenylpiperidine discovered accidentally in 1930s Germany by Eisleb and Schaumann, long used in obstetrics and postoperative pain but now superseded in many countries.

Pethoxamid

Pethoxamid (CAS 106700-29-2) is a chloroacetamide, WSSA Group 15 pre-emergence herbicide for maize, soybean, rice, and nursery crops; EU-approved 1 December 2018 to 30 November 2033.

Petiese (prince of Athribis)

Petiese was an official of Athribis in the Egyptian Delta who surrendered his residence city to the Kushite king Piye, as recorded on the Victory Stela of Piye.

Petiese (prophet of Amun)

Petiese, also written Pediese, was a prophet of Amun at Teudjoi in Middle Egypt who lived under the Persian king Darius I and wrote the Petition of Petiese.

Petiole (botany)

In botany, a petiole, also called a leaf stalk, is the stalk attaching a leaf blade to the stem, carrying water, nutrients, and sugars between leaf and stem.

Pétionville

Pétionville (Pétion-Ville), commune in the hills south of Port-au-Prince, Ouest department, Haiti; founded 1831 honoring Alexandre Pétion; affluent commercial suburb of 359,615 (2012), hit by 2010 earthquake topographic amplification and 2024 gang attacks.

Petit (Portuguese footballer)

Petit (Armando Gonçalves Teixeira), Portuguese defensive midfielder born 1976 in Strasbourg; 57 caps, 4 goals, World Cups 2002 and 2006; league titles with Boavista 2001 and Benfica 2005.

Petit Bain

Petit Bain is a floating cultural venue and club moored on the Seine in Paris, opened in July 2011, with a 450-person concert hall and genre-crossing electronic programming.

Petit baronets

Petit baronets, of Petit Hall, Bombay: a baronetcy of the United Kingdom created 1 September 1890 for Parsi cotton-mill magnate Sir Dinshaw Manockjee Petit, with a special remainder to his second son and a name-assumption condition.

Petit Biscuit

Petit Biscuit is the stage name of Mehdi Benjelloun, a French electronic producer and multi-instrumentalist from Rouen whose 2015 instrumental hit "Sunset Lover" earned diamond certification in France.

Petit Loango

Petit Loango is a Ramsar wetland of international importance on Gabon's Atlantic coast, designated in 1986, overlapping Loango National Park and sheltering hippos, gorillas, elephants, and nesting sea turtles.

Petit Planet

Petit Planet is HoYoverse's free-to-play cosmic life sim, an Animal Crossing-style game on PC, iOS, and Android, announced September 2025, in Final Beta until October 19, 2026, releasing Winter 2026.

Petit Saut Dam

The Petit Saut Dam is a hydroelectric dam on the Sinnamary River in French Guiana, commissioned in 1994 and supplying about two thirds of the territory's electricity.

Petit Verdot

Petit Verdot, also called lambrusquet, is a black-skinned French Bordeaux red wine grape from the Pyrenees. Late-ripening and low-vigor, it adds color, tannin, and spice to blends; 1.3% of Bordeaux red plantings, also grown in Napa, Argentina, and Australia.

Petit-Clamart attack

Petit-Clamart attack (Opération Charlotte Corday): failed OAS assassination attempt on President Charles de Gaulle, 22 August 1962, near Paris; 187 shots missed; Bastien-Thiry executed in 1963.

Petit-Mars

Petit-Mars (Kervarc'h), commune in Loire-Atlantique, France, north of Nantes; named after the god Mars and the forêt de Mars. Gallo-Roman theater and Temple of Mars at the Coussol (SILVA MARTIS); 3,888 inhabitants; mayor Chrystophe Pabois since 2026.

Petite bourgeoisie

Petite bourgeoisie (petty bourgeoisie), French for "small bourgeoisie," is the lower middle class of small shopkeepers, artisans, and small-business owners; central to Marxist, Weberian, and Bourdieusian class theory.

Petite France, Strasbourg

Petite France (Gerberviertel) is Strasbourg's historic tanners', millers', and fishermen's quarter at the western end of the Grande Île, where the Ill splits into canals; half-timbered 16th-17th century houses, Ponts Couverts towers, Vauban dam, UNESCO-listed since 1988.

Petite Kabylie

Petite Kabylie (Kabylie des Babors, Little Kabylia): eastern part of Kabylia, Algeria, east of the Soummam valley, spanning Bejaia, Jijel, Setif and Bordj Bou Arreridj wilayas; Djebel Babor 2,004 m, more arabized, cereal and livestock economy.