All articles starting with P
28,818 articles
Perfect Match season 4
Perfect Match season 4 is the fourth Netflix reality dating competition installment, hosted by Nick Lachey. The season premiered May 13, 2026, concluding with Sophie and Dave.
Perfect number
A perfect number is a positive integer that equals the sum of its proper divisors, as in 6 = 1 + 2 + 3 and 28.
Perfect numbers
A perfect number is a positive integer equal to the sum of its proper divisors, such as 6 and 28; every even one arises from a Mersenne prime.
Perfect power
A perfect power is a positive integer that can be written as m^k, with m > 1 and k at least 2, such as 4, 8, 9, and 27.
Perfect season
Perfect season: winning every league fixture with no draws or losses, counting only the primary league. Rare in men's football (Rangers 1898-99, Ferencváros 1931-32); never done in the Premier League; the 1972 Miami Dolphins are the NFL's only case.
Perfect Sense
Perfect Sense (2011) is a drama directed by David Mackenzie, written by Kim Fupz Aakeson, starring Ewan McGregor and Eva Green as a Glasgow chef and epidemiologist falling in love during an epidemic that removes the senses one by one; Sundance 2011 premiere, Edinburgh Best New British Feature winner.
Perfect Sisters
Perfect Sisters (2014), also released as Deadly Sisters, is a Canadian true-crime drama directed by Stanley M. Brooks, starring Abigail Breslin, Georgie Henley, and Mira Sorvino, based on the 2003 "Bathtub Girls" matricide case in Mississauga, Ontario via Bob Mitchell's book The Class Project.
Perfect Stranger (film)
Perfect Stranger is a 2007 American psychological thriller directed by James Foley, in which Halle Berry's investigative reporter goes undercover to probe advertising executive Bruce Willis for murder.
Perfect Strangers (2016 film)
Perfect Strangers (Perfetti sconosciuti) is a 2016 Italian comedy-drama by Paolo Genovese in which dinner guests share their phone contents aloud. It won two David di Donatello awards and holds the Guinness record as the most remade film, with 24 remakes and no English version.
Perfect Strangers (album)
Perfect Strangers (1984) is Deep Purple's reunion studio album for the Mark II lineup of Gillan, Blackmore, Lord, Paice, and Glover, recorded in Stowe, Vermont, peaking at UK number 5 and selling 3 million copies.
Perfect Strangers (TV series)
Perfect Strangers (1986-1993), ABC sitcom distinct from Hulu's Nine Perfect Strangers: cousins Balki Bartokomous (Bronson Pinchot) and Larry Appleton (Mark Linn-Baker) share a Chicago apartment, anchor ABC Fridays, and spawn Family Matters.
Perfect Victims
Perfect Victims: And the Politics of Appeal is Mohammed El-Kurd's 2025 Haymarket Books essay collection critiquing the demand that Palestinians perform idealized victimhood to earn sympathy; a bestseller and Palestine Book Award winner.
Perfect Wife: The Mysterious Disappearance of Sherri Papini
Perfect Wife: The Mysterious Disappearance of Sherri Papini is a 2024 three-episode Hulu true-crime docuseries by Erin Lee Carr and Michael Beach Nichols about Sherri Papini's 2016 staged kidnapping near Redding, California and the six-year investigation that exposed it.
Perfect World
Perfect World (完美世界) is a Beijing-based online game developer and publisher founded by Chi Yufeng, known for MMORPGs such as Zhu Xian and for operating Dota 2, Counter-Strike, and Steam China.
Perfect World Shanghai Major 2024
Perfect World Shanghai Major 2024, the first Counter-Strike Major in Asia and China, ran Nov 30-Dec 15, 2024 in Shanghai with 24 teams and a $1.25M prize pool; Team Spirit beat FaZe 2-1, with 17-year-old donk the youngest MVP.
Perfecth
Perfecth is the ninth studio album by Queens of the Stone Age, released October 30, 2026 on Matador Records. Produced by Josh Homme and Michael Shuman, recorded in New Orleans and Los Angeles, its deliberately misspelled title reflects a kintsugi-inspired theme of imperfection and repair.
Perfectionism (psychology)
Perfectionism (psychology): a personality trait of excessively high standards and overly critical self-evaluation, measured by the FMPS and HMPS scales, a transdiagnostic risk factor for eating disorders, anxiety, OCD, and depression, treatable with CBT, and rising among college students since 1989.
Perfective aspect
Perfective aspect, a grammatical verb category opposed to imperfective aspect, presents an event as a completed whole without internal structure; central in Russian, Greek, and Comrie's aspect theory.
Perfectly matched layer
A perfectly matched layer (PML) is an artificial absorbing layer that lets finite methods like FDTD and FEM simulate unbounded media, introduced by Bérenger in 1994.
Perficient
Perficient, Inc. is a global digital consultancy headquartered in St. Louis, Missouri, founded in Austin in the late 1990s and taken private by EQT in a $3.0 billion deal in October 2024.
Perfidious Albion
Perfidious Albion (French: la perfide Albion) is a pejorative phrase for Britain alleging diplomatic treachery and duplicity. Coined in a 1793 French poem by the Marquis de Ximenez, spread during the Napoleonic wars, and still used in Brexit and Aukus disputes.
Perfidy
Perfidy is the war crime of feigning a protected status under international humanitarian law, such as surrender, civilian status, or the red cross emblem, to kill, injure, or capture an adversary; distinct from lawful ruses of war like camouflage and ambush.
Perfios
Perfios is a Bengaluru-based B2B fintech software company, founded in 2008, providing real-time credit underwriting, KYC, and decisioning tools to banks and NBFCs across 18 countries.
Perfios Software
Perfios Software is a Bengaluru-based fintech company founded in 2008 that provides credit underwriting, loan onboarding, and fraud detection software to banks and NBFCs, becoming a profitable unicorn in 2024.
Perflenapent
Perflenapent (dodecafluoropentane, C5F12; EchoGen, Sonus Pharmaceuticals) is a liquid perfluorocarbon phase-shift ultrasound contrast agent. EU-approved 1998, withdrawn 2001; US NDA withdrawn 2000; superior to Albunex in phase III trials.
Perflubutane
Perflubutane (C4F10), sold as Sonazoid, is a perfluorocarbon gas used in lipid-shelled microbubble ultrasound contrast agents; first approved in Japan in 2006, it enables Kupffer-phase liver imaging and is approved in China, Japan, Korea, Norway, Singapore, and Taiwan.
Perfluidone
Perfluidone (Destun, MBR-8251) is a 3M sulfonanilide herbicide, patented 1974, registered in the USA 1976 for nutsedge control in flue-cured tobacco but never commercially marketed; not EU-approved.
Perfluorinated graded-index plastic optical fiber
Perfluorinated graded-index plastic optical fiber is a polymer optical fiber whose fluorinated CYTOP core lowers loss and whose graded index suppresses modal dispersion, enabling gigabit short-reach links.
Perfluoroalkyl carboxylic acids
Perfluoroalkyl carboxylic acids (PFCAs), also called perfluorocarboxylic acids, are persistent PFAS chemicals with a fully fluorinated carbon chain attached to a carboxylic acid group; PFOA is the best known.
Perfluorobutane
Perfluorobutane, also called perflubutane or decafluorobutane, is a perfluorocarbon gas with formula C₄F₁₀, best known as the core of Sonazoid ultrasound contrast agent, a Cherenkov radiator gas at CERN, and a potent greenhouse gas.