All articles starting with P

Piperaquine

Piperaquine is a long-acting bisquinoline antimalarial, structurally related to chloroquine, that is used almost exclusively as the fixed-dose combination with dihydroartemisinin for treating uncomplicated malaria and, in repeated monthly courses, for malaria chemoprevention.

Piperazine

Piperazine, also known as hexahydropyrazine, is an organic compound, C4H10N2, best known as an anthelmintic drug introduced in 1953 that paralyzes intestinal roundworms and is also a widely used CO2 capture promoter.

Piperica

Piperica, also cataloged as Barrington Atlas 50 D2 Piperica and Pleiades place 491698, is an ancient fort site in present-day Bulgaria, dated 30 BC to AD 300, located near 41.42 N, 23.46 E.

Piperidine

Piperidine, also called hexahydropyridine, is a saturated six-membered nitrogen heterocycle, a colorless liquid with a pepper-like odor made from pyridine and common in FDA-approved small-molecule drugs.

Piperidolate

Piperidolate (Dactil) is a racemic tertiary amine antimuscarinic antispasmodic, ATC A03AA30, C21H25NO2, CAS 82-98-4, approved in Japan in 1967 for spasm and premature labor, banned in US racing.

Piperine

Piperine, the pungent alkaloid of black pepper (Piper nigrum) and long pepper, is a bioenhancer that inhibits CYP3A4 and P-glycoprotein, raising bioavailability of co-administered drugs such as phenytoin and curcumin.

Piperonyl butoxide

Piperonyl butoxide (PBO, CAS 51-03-6) is a man-made pesticide synergist, developed in the USA by Herman Wachs in 1947, that inhibits insect cytochrome P450 enzymes to boost pyrethrins, pyrethroids, and carbamates.

Pipes of Peace

Pipes of Peace is Paul McCartney's fourth solo studio album, released 31 October 1983, produced by George Martin, largely from Tug of War sessions, with Michael Jackson duets "Say Say Say" (US number one) and "The Man"; UK number 4, US number 15.

Pipestone (AltaGas Montney facility)

Pipestone is a sour deep-cut natural gas processing and liquids handling complex in the Alberta Montney near Grande Prairie, owned and operated by AltaGas Ltd.

Pipestone gas plant

The Pipestone gas plant is a Keyera-owned sour gas processing and liquids stabilization plant west of Grande Prairie, Alberta, serving Ovintiv's Montney development since 2020.

Pipette

A pipette, or pipettor, is a laboratory instrument that measures and transfers precise liquid volumes; Heinrich Schnitger invented the piston-stroke pipette in 1958, and Eppendorf launched the first industrial version in 1961.

Oct 22, 2026

Pipil kingdom of Izalco

The Pipil kingdom of Izalco (los Izalcos) was a Nahua state in western El Salvador, known for cacao so abundant that the beans served as money.

Oct 22, 2026

Pipil migration to El Salvador

The Pipil migration to El Salvador was the movement of Nahuat-speaking Nahua groups from central Mexico between about A.D. 600 and 1300, making the Pipil dominant there.

Pipilo

Pipilo (towhees) is a Vieillot 1816 genus of Passerellidae sparrows holding the rufous-sided towhees: Eastern, Spotted, Green-tailed, Collared, and Bermuda Towhees; brown towhees moved to Melozone.

Piping

Piping is a system of pipes, fittings, and valves that conveys fluids within plants and buildings, distinct from long-distance pipelines and governed by ASME B31 codes.

Piping and instrumentation diagram

A piping and instrumentation diagram (P&ID), also called a process and instrumentation diagram, is an engineering drawing showing a process plant's equipment, piping, valves, and instrumentation.

Piping and internal erosion

Piping and internal erosion is the process by which seepage through an embankment dam or levee carries away soil particles, forming erosion channels that can cause breach.

Piping and plumbing fitting

A piping and plumbing fitting, also known as a pipe fitting, is a component that connects, redirects, branches, reduces, or terminates pipe and tubing in fluid systems.

Piping and suffosion pseudokarst

Piping and suffosion pseudokarst: karst-like caves, sinkholes, and drainage formed by mechanical grain-by-grain erosion (piping) of tuffs, loess, clay, silt, and sandstone, faster than true dissolution karst; examples include Officer's Cave, Oregon, and Gunnels Cave, Texas.

Pipistrel

Pipistrel is a Slovenian light aircraft manufacturer based in Ajdovščina, founded by Ivo Boscarol in 1989 as the first private aircraft producer in the Balkans, owned by Textron since 2022.

Pipistrel Sinus

The Pipistrel Sinus is a Slovenian two-seat, side-by-side motorglider produced by Pipistrel in Ajdovščina, first flown in 1996, with a 15-meter wingspan and a glide ratio up to 28:1.

Pipistrel Velis Electro

The Pipistrel Velis Electro is a two-seat electric training aircraft built in Slovenia, the first fully electric aircraft type certified worldwide, by EASA in June 2020.

Pipistrello and the Cursed Yoyo

Pipistrello and the Cursed Yoyo is a 2025 top-down 2D action-adventure, self-described "yoyovania," by Brazilian studio Pocket Trap and published by PM Studios; it stars Pippit, whose aunt's soul is trapped in his yoyo, and earned Metacritic 87 and OpenCritic 88.

Pipistrellus

Pipistrellus (pipistrelles), genus of small vesper bats in Vespertilionidae, tribe Pipistrellini, established by Kaup 1829; type species the common pipistrelle. Molecular work shows the genus paraphyletic, with Asian and African relatives split into separate genera.

Pipobroman

Pipobroman (Vercyte, Vercite), an oral piperazine alkylating antineoplastic (ATC L01AX02) for polycythaemia vera; FDA approved 1966, discontinued 1996, restricted to second-line use for leukemogenicity.

Pipotiazine palmitate

Pipotiazine palmitate (Piportil Depot, 19.552 R.P.) is a long-acting depot phenothiazine antipsychotic, the palmitate ester of pipotiazine, given by monthly intramuscular injection for schizophrenia maintenance; equivalent to other depots, discontinued in 2015 after an API shortage.

Pippa (film)

Pippa (पिप्पा) is a 2023 Hindi war film directed by Raja Krishna Menon, adapted from Brigadier Balram Singh Mehta's The Burning Chaffees, starring Ishaan Khatter, about the Battle of Garibpur and the PT-76 tank in the 1971 Indo-Pakistani war, released on Prime Video 10 November 2023.

Pippa Bacca

Pippa Bacca, pseudonym of Giuseppina Pasqualino di Marineo (1974–2008), Italian performance and feminist artist, niece of Piero Manzoni; died during the Brides on Tour hitchhiking peace performance near Istanbul.

Pippa Bennett-Warner

Pippa Bennett-Warner (Philippa Elaine Fanti Bennett-Warner), British actress born 1988 in Banbury; RADA graduate, original West End young Nala in The Lion King, Cordelia opposite Derek Jacobi, Shannon Dumani in Gangs of London.