All articles starting with P
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Pentathlus expedition
The Pentathlus expedition, or Expedition of Pentathlus, was a failed attempt around 580 BC by Greeks of Rhodes and Cnidus, led by Pentathlos of Cnidus, to colonize western Sicily.
Pentatomidae
Pentatomidae, stink bugs or shield bugs, is a family of Hemiptera with shield-shaped bodies, five-segmented antennae, and a triangular scutellum; about 5,000 species, mostly plant-feeding crop pests, some predatory Asopinae.
Pentatonic scale
Pentatonic scale: a five-note-per-octave musical scale; major form (C D E G A) omits degrees 4 and 7 of the major scale. Anhemitonic, found across world cultures, basis of the blues scale.
Pentatonix
Pentatonix (PTX), American a cappella quintet formed 2011 in Arlington, Texas; won The Sing-Off season 3, three Grammy Awards, holiday-music franchise, members Hoying, Grassi, Maldonado, Olusola, Sallee.
Pentavalent vaccine
Pentavalent vaccine, a five-in-one combination vaccine against diphtheria, tetanus, pertussis, hepatitis B, and Hib (DTwP-HepB-Hib in Gavi countries; Pediarix and Pentacel in the US), now transitioning to hexavalent with IPV.
Pentawer
Pentawer, also written Pentaweret or Pentawere, was a prince of Egypt's 20th Dynasty, a son of Ramesses III condemned for his part in the harem conspiracy against his father.
Pentax
Pentax is a camera brand owned by Ricoh Imaging, tracing to the 1919 founding of Asahi Optical in Tokyo and known for its single-lens reflex cameras.
Pentazenium
Pentazenium (N5+) is a five-nitrogen cation first prepared in 1999, one of only three known homoleptic polynitrogen species and studied as a high energy density material.
Pentazocine
Pentazocine (Talwin, Fortral) is a benzomorphan mixed opioid agonist-antagonist analgesic, a mu partial agonist and kappa agonist, one-sixth to one-third as potent as morphine, marketed since 1983 with naloxone to deter injection misuse.
Pentazolate
Pentazolate (cyclo-N5−) is an aromatic anion of a five-membered ring of only nitrogen atoms, first isolated as a stable salt in 2017 and studied for high-energy-density materials.
Pente
Pente, a 1977 abstract strategy game by Gary Gabrel based on ninuki-renju, played on a 19×19 Go board; win by five in a row or capturing five pairs, with a tournament rule balancing the first player.
Pente Grammai
Pente Grammai (πέντε γραμμαί, Five Lines) is an ancient Greek dice race board game for two players with five counters each on five parallel lines, attested from the late 7th century BC, with a proverbial sacred central line and reconstructions by Schädler and Kidd.
Pentecost (Πεντηκοστή)
Pentecost (Greek Πεντηκοστή, "the fiftieth") is the Christian feast commemorating the descent of the Holy Spirit upon the apostles, celebrated on the fiftieth day after Easter.
Pentecost Island
Pentecost Island (Pentecôte, Pentikos, Raga) is a 490 km² island in Penama Province, Vanuatu, 190 km north of Port Vila, home of the naghol land diving ritual that inspired bungee jumping and birthplace of Walter Lini.
Pentecostalism
Pentecostalism, or the Pentecostal movement, is a Protestant Christian movement emphasizing Spirit baptism and speaking in tongues, begun in Topeka and Los Angeles in 1901 and 1906.
Pentele
Pentele (Πεντελή) was an ancient Attic settlement, possibly a deme, tentatively placed on Mount Pentelikon near Athens, source of Pentelic marble; distinct from Dunapentele, Hungary.
Penteskouphia
Penteskouphia, site southwest of Acrocorinth near Corinth, source of about 1,000 Archaic votive terracotta plaques (pinakes) dedicated to Poseidon from 1879, famed for depictions of potters, kilns, and workshop scenes.
Pentetic acid
Pentetic acid, also called diethylenetriaminepentaacetic acid (DTPA), is a synthetic polyaminopolycarboxylic acid that strongly binds metal ions; its calcium and zinc salts are FDA-approved chelating agents for plutonium contamination.
Pentetreotide
Pentetreotide (Octreoscan, indium In 111 pentetreotide) is a DTPA conjugate of octreotide radiolabeled with indium-111 for somatostatin receptor scintigraphy of neuroendocrine tumors; FDA approved 1994, now largely replaced by gallium-68 SSTR PET.
Penthesilea
Penthesilea (Πενθεσίλεια), Amazon queen and daughter of Ares, came to Troy's aid after Hector's death and was killed by Achilles, who fell in love with her dying; retold by Quintus Smyrnaeus and, radically, in Kleist's 1808 drama.
Penthesilea Fossa
Penthesilea Fossa, a 1,700 km long narrow depression (fossa) on Venus at 12 S, 214 E, IAU-named 1997 for the Greek amazon queen; part of the 3,700 km Great Dyke of Atla Regio graben.
Penthiopyrad
Penthiopyrad (ペンチオピラド), a chiral SDHI (FRAC 7) carboxamide fungicide from Mitsui Chemicals sold as Vertisan and Fontelis; broad-spectrum complex II inhibitor, EU-approved 2014, with S-enantiomer far more active than R.
Penthouse (magazine)
Penthouse is an adult entertainment magazine founded in London in 1965 by Bob Guccione, which entered the United States in 1969 as a more explicit rival to Playboy.
Penthouse apartment
A penthouse apartment, also called a penthouse suite, occupies the top floor of a building and is typically the most expensive residential real estate in many cities.
Pentiment (video game)
Pentiment is a 2022 narrative adventure game by Obsidian Entertainment, directed by Josh Sawyer, following artist Andreas Maler through murders in 16th-century Bavarian Tassing and Kiersau Abbey, with no designated culprit and manuscript-style art.
Pentium
Pentium, or Intel Pentium, is a brand of x86 microprocessors introduced by Intel in March 1993 as its fifth-generation line, later a budget tier, replaced by the Intel Processor brand in 2023.
Pentium (original)
The original Pentium, known by its Intel code name P5, is a fifth-generation x86 microprocessor Intel announced in March 1993 as the successor to the i486.
Pentium 4
The Pentium 4, also known as Pentium IV, is a line of Intel x86 desktop processors introduced in November 2000 on the NetBurst microarchitecture and built for high clock speeds.
Pentium Dual-Core
Intel Pentium Dual-Core was a processor brand used from 2007 to 2008 for budget dual-core CPUs with lower clock speeds and less L2 cache than the Core 2 Duo.
Pentium FDIV bug
The Pentium FDIV bug, also called the Pentium divide bug, was a 1994 hardware defect in early Intel Pentium processors' floating-point division, found by Thomas Nicely and leading to a recall.