All articles starting with P
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Poison (Bell Biv DeVoe song)
"Poison" is a 1990 new jack swing single by Bell Biv DeVoe, produced by Dr. Freeze and written by Elliott Straite; it peaked at number three on Billboard's pop chart and anchored a four-million-selling album.
Poison (Final Fight)
Poison is a Capcom fictional character debuting as a Mad Gear gang enemy in Final Fight (1989), later playable in Final Fight Revenge and Street Fighter X Tekken, and the subject of a long-running gender-identity dispute.
Poison 2
Poison 2 is the 2020 second season of ZEE5's Hindi crime thriller Poison, directed by Vishal Pandya, starring Aftab Shivdasani (Aditya/Jaiveer) and Raai Laxmi; 11 episodes about revenge around a Goa racecourse, released 16 October 2020.
Poison Control Centers
Poison control centers, also called poison information centres, provide free 24/7 toxicology advice by phone (1-800-222-1222 in the US) and online triage; the US network of 53 accredited centers began in Chicago in 1953 and feeds the National Poison Data System.
Poison dart frog
Poison dart frogs (Dendrobatidae), 213 species of small Central and South American frogs whose toxic skin alkaloids come from an arthropod diet; captive-raised frogs are harmless, and only Phyllobates species are documented dart-poison sources.
Poison Girl Friend
Poison Girl Friend is the solo project of Noriko Sekiguchi, known for melancholy, club-influenced pop. The project's song "HARDLY EVER SMILE (without you)" passed 10 million streams on Spotify.
Poison Idea
Poison Idea was an American hardcore punk band formed in Portland, Oregon, in 1980 by vocalist Jerry A., blending hardcore with metal before its final shows in December 2019.
Poison ivy
Poison ivy (Toxicodendron radicans, formerly Rhus radicans) is a North American Anacardiaceae vine or shrub whose urushiol oil causes allergic contact dermatitis in 10–50 million Americans yearly; three leaflets, cross-reacts with poison oak and sumac.
Poison Ivy (1992 film)
Poison Ivy (1992) is a Katt Shea erotic thriller starring Drew Barrymore, Sara Gilbert, Tom Skerritt, and Cheryl Ladd; released by New Line Cinema May 8, 1992, grossing $1,829,804 and spawning three sequels.
Poison Ivy (character)
Poison Ivy, aka Dr. Pamela Isley, is a DC Comics Batman villain and ecoterrorist debuting in Batman #181 (1966), created by Kanigher and Moldoff, with plant control, pheromones, toxin immunity, a Harley Quinn romance, and a GLAAD-winning solo series.
Poison Ivy (musician)
Poison Ivy (Kristy Marlana Wallace, born 1953), American guitarist of the Cramps, not the DC character or Dutch band; co-founded psychobilly pioneers with Lux Interior, played Gretsch 6120, produced A Date with Elvis.
Poison Ruïn
Poison Ruïn (also styled Poison Ruin) is a Philadelphia punk band formed in 2020 by Mac Kennedy, blending anarcho punk, dungeon synth, and black metal with medieval imagery; albums Härvest (2023) and Hymns From the Hills (2026) on Relapse Records.
Poisoned candy myths
Poisoned candy myths, or Halloween sadism, are contemporary legends about strangers poisoning or booby-trapping trick-or-treat candy. Joel Best's research found roughly 200 tampering reports since 1958, mostly hoaxes, and no substantiated stranger-caused death.
Poisoning of Alexander Litvinenko
The 2006 London poisoning of ex-FSB officer Alexander Litvinenko with polonium-210 in tea, killed by Andrey Lugovoy and Dmitri Kovtun under FSB direction; UK inquiry and ECHR held Russia responsible.
Poisoning of Alexei Navalny
Poisoning of Alexei Navalny: the 20 August 2020 Novichok attack on the Russian opposition leader aboard a Tomsk-Moscow flight, his evacuation to Berlin's Charité, Bellingcat's FSB attribution, sanctions, and his 2024 death in a penal colony.
Poisoning of Sergei and Yulia Skripal (Юлия Скрипаль)
Poisoning of Sergei and Yulia Skripal (Юлия Скрипаль): attempted Novichok murder of a former GRU officer and his daughter in Salisbury, 4 March 2018; attributed to GRU Unit 29155; Dawn Sturgess died in Amesbury.
Poisson approximation
Poisson approximation, known as the law of rare events or law of small numbers, approximates the distribution of many rare random events by a Poisson distribution with the same mean.
Poisson bracket
The Poisson bracket is an operation on functions of a mechanical system's positions and momenta, defined as a sum of mixed partial derivatives that governs time evolution in Hamiltonian mechanics.
Poisson distribution
The Poisson distribution is a discrete probability distribution giving the probability that a number of events occurs in a fixed interval at a constant average rate, with mean and variance equal to the single parameter λ.
Poisson limit theorem
The Poisson limit theorem, or law of rare events, states that a binomial distribution with many trials and small success probability converges to a Poisson distribution.
Poisson point process
The Poisson point process, also known as the Poisson random point field, is a mathematical model for events scattered without interaction, with independent counts in disjoint regions.
Poisson regression
Poisson regression is a generalized linear model used to predict counts of events, such as hospital admissions, from explanatory variables, assuming the response follows a Poisson distribution.
Poisson sampling
Poisson sampling is a survey sampling design in which each population unit is selected independently with its own inclusion probability, giving a random sample size.
Poisson–Boltzmann equation
The Poisson–Boltzmann equation is a mean-field partial differential equation describing ion distributions and electrostatic potential around charged surfaces, the central continuum model of the electrical double layer.
Poisson's equation
Poisson's equation, also known as the Poisson problem, is a second-order elliptic partial differential equation relating a potential's curvature to source density like charge or mass.
Poisson's ratio
Poisson's ratio, symbol ν, measures how much a stretched material contracts sideways: about 0.5 for rubber, 0.27 to 0.33 for steel, and near zero for cork.
Poitiers
Poitiers, prefecture of Vienne in Nouvelle-Aquitaine, France, is a city of about 90,000 on a rocky spur between the Clain and Boivre rivers, a former regional capital with 86 listed monuments and 31,000 students.
Poitín
Poitín (poteen), Ireland's traditional clear, unaged pot-still spirit made from cereals, potatoes, whey, or molasses; illegal from 1661 to 1997, now an EU and UK Geographical Indication.
Poitou
Poitou, historic province of western France around Poitiers (Pictones/Pictavi), divided into Upper and Lower Poitou; county of the Ramnulfid counts-dukes, Plantagenet from 1152, French from 1204/1259, annexed 1369–1373.
Poitou-Charentes Region
Poitou-Charentes, former administrative region of western France (capital Poitiers; four departments: Charente, Charente-Maritime, Deux-Sèvres, Vienne), known for cognac and oysters; merged into Nouvelle-Aquitaine on 1 January 2016.