All articles starting with P
28,818 articles
Phffft
Phffft (1954 film), an American romantic comedy directed by Mark Robson, starring Judy Holliday and Jack Lemmon as a divorced couple, from George Axelrod's play, released by Columbia November 10, 1954.
PHGDH
PHGDH (phosphoglycerate dehydrogenase, 3PGDH) is a human gene at 1p12 encoding the NAD-dependent enzyme catalyzing the first, rate-limiting step of L-serine synthesis; mutations cause serine-deficiency microcephaly, and amplification drives melanoma and breast cancer.
Phi
Phi (Ancient Greek: φεῖ) is the 21st letter of the Greek alphabet, written Φ or φ, representing [pʰ] in Ancient Greek and [f] in Modern Greek.
Phi (small language model family)
Phi is a family of small language models developed by Microsoft, running from Phi-1 through Phi-4, built on curated textbook-quality training data and used on phones, laptops, and Copilot+ PCs.
Phi Andromedae
Phi Andromedae, officially named Junnanmen (军南门) by the IAU in 2025, is a Be star of type B7Ve in Andromeda, about 717 light-years away and visible to the naked eye.
Phi Beta Kappa
Phi Beta Kappa (ΦΒΚ, Φιλοσοφία Βίου Κυβερνήτης) is the oldest U.S. academic honor society, founded December 5, 1776 at William & Mary; 290+ chapters elect ~10% of arts and sciences graduates.
Phi Beta Sigma
Phi Beta Sigma Fraternity, Inc., a historically African-American Greek-letter fraternity founded January 9, 1914 at Howard University by Taylor, Morse, and Brown; motto "Culture For Service and Service For Humanity"; sister organization Zeta Phi Beta.
Phi coefficient
The phi coefficient is a measure of the association between two binary variables, computed from a 2 × 2 table and ranging from −1 to +1.
Phi Delta Theta
Phi Delta Theta (ΦΔΘ), commonly known as Phi Delt, is an international social fraternity for college men founded in 1848 at Miami University in Oxford, Ohio.
Phi Gamma Delta
Phi Gamma Delta, or Fiji, is a social fraternity founded May 1, 1848 at Jefferson College, Pennsylvania, by the Immortal Six; known for the Fiji nickname, Pig Dinner, Archonate governance, 2022 abolition of pledging, and alumni including Calvin Coolidge and Neil Gorsuch.
Phi Kappa Psi (ΦΚΨ)
Phi Kappa Psi (ΦΚΨ), a social fraternity founded February 19, 1852 at Jefferson College by Letterman and Moore; over 6,000 undergraduates on 90+ campuses; publishes The Shield; known for the Rolling Stone settlement and recent hazing suspensions.
Phi Kappa Tau (ΦΚΤ)
Phi Kappa Tau (ΦΚΤ), or Phi Tau, is a national social fraternity founded March 17, 1906 at Miami University, Oxford, Ohio, as the Non-Fraternity Association; renamed Phrenocon in 1909 and Phi Kappa Tau in 1916, with about 81 active chapters.
Phi Kappa Theta (ΦΚΘ)
Phi Kappa Theta (ΦΚΘ) is an American social fraternity formed April 29, 1959 by merging Phi Kappa (Brown, 1889) and Theta Kappa Phi (Lehigh, 1919), once Catholic-only, motto "Give, Expecting Nothing Thereof."
Phi meson
The phi meson, written φ(1020), is a neutral vector meson of a strange quark and antiquark, discovered at Brookhaven in 1962 and decaying mostly to kaon pairs.
Phi Persei
Phi Persei, named Dajiangjunbei in 2025, is a binary star in Perseus where a rapidly spinning Be star orbits a hot stripped subdwarf every 126.7 days.
Phi Phi Islands
Phi Phi Islands: limestone archipelago in Thailand's Andaman Sea, Krabi province, in Hat Noppharat Thara–Mu Ko Phi Phi National Park. Main islands Phi Phi Don and Phi Phi Leh; Maya Bay, The Beach filming site, closed 2018–2022 for reef recovery.
Phi Phong: The Blood Demon
Phi Phong: The Blood Demon (Phí Phông: Quỷ Máu Rừng Thiêng) is a 2026 Vietnamese folk-horror film by Đỗ Quốc Trung about a blood-drinking highland demon; it became Vietnam's highest-grossing horror film at over 201 billion VND.
Phi Slama Jama
Phi Slama Jama: nickname of Houston Cougars men's basketball, 1982-84, coined by Thomas Bonk; Guy Lewis coached Olajuwon and Drexler to three Final Fours, two title-game losses.
Phi X 174 (ΦX174)
Phi X 174 (ΦX174) is a tailless Microviridae bacteriophage of E. coli with a 5,386-nucleotide circular DNA genome of 11 genes, the first DNA genome sequenced, by Sanger in 1977.
Phi Zeta
Phi Zeta is the honor society of veterinary medicine, founded May 4, 1925 at Cornell University, named from Greek philozoi (love of animals), organized nationally in 1929 in Detroit, with chapters at accredited US veterinary colleges and top-10%/top-25% student eligibility.
Phi-2 Orionis
Phi-2 Orionis, also cataloged as 40 Orionis, is a naked-eye orange giant star in Orion about 116 light years away, visible at magnitude 4.09 and receding at about 99 km/s.
Phi-3
Phi-3 is a family of open small language models developed by Microsoft, first released in April 2024 with phi-3-mini, a 3.8 billion parameter model rivals said competed with GPT-3.5.
Phi-4
Phi-4 is a 14-billion-parameter large language model released by Microsoft in December 2024, trained mostly on synthetic data to match larger models on math and STEM reasoning.
Phia Saban
Phia Saban (born 1998) is an English actress, a Guildhall School graduate, known as Queen Helaena Targaryen in House of the Dragon, Lady Aelfwynn in The Last Kingdom, and Solange in The Maids at the Donmar Warehouse.
Phial of Galadriel
Phial of Galadriel, also called the star-glass, is a crystal phial in Tolkien's The Lord of the Rings holding the light of Eärendil's star, given to Frodo in Lothlórien and used against Shelob and the Watchers of Cirith Ungol.
Phialophora
Phialophora (Medlar 1915) is a genus of anamorphic ascomycete fungi in Chaetothyriales, Herpotrichiellaceae, defined by collarette-bearing phialides; type species P. verrucosa causes chromoblastomycosis.
Phidgets
Phidgets are programmable USB sensors and control boards made by Phidgets Inc., letting software interact with the physical world without custom electronics; they are used in education and interface research.
Phidias
Phidias (Φειδίας, Pheidias), Athenian sculptor active c. 465–425 BCE, directed the Parthenon sculptures, made the gold-and-ivory Athena Parthenos and the Zeus at Olympia, a Seven Wonder; no original survives.
Phidippus audax
Phidippus audax, the bold jumper (bold jumping spider), a large black North American jumping spider with white or orange abdominal spots and iridescent green chelicerae; type species of Phidippus, common in gardens, predator of crop pests.
Phife Dawg
Phife Dawg, born Malik Izaak Taylor (1970–2016), was an American rapper and founding member of Queens hip-hop group A Tribe Called Quest, who died of diabetes complications at 45.