Search by letter: P
Search by letter
Search by letter: P
- Pittsburgh, Pennsylvania: history, geography, economy and culture Pittsburgh
- Pittsburgh Penguins
- Pittsburgh Pirates
- Pittsburgh Pirates (NHL): early American professional ice hockey team Pittsburgh Pirates (NHL)
- Pittsburgh Post-Gazette
- Pittsburgh Steelers
- Pittsburgh Symphony Orchestra — overview, history, and role in the city Pittsburgh Symphony Orchestra
- Pittsburgh synagogue shooting (Tree of Life, October 27, 2018) Pittsburgh synagogue shooting
- Pittsburgh Theological Seminary
- Pittsfield Building
- Pittsfield, Illinois — county seat and small Midwestern city Pittsfield, Illinois
- Pittsfield, Massachusetts — City and cultural hub in the Berkshires Pittsfield, Massachusetts
- Pittsylvania County, Virginia
- Pituitary adenoma
- Pituitary gland: structure, function, development, and clinical relevance Pituitary gland
- Pity: meaning, characteristics, distinctions, and social effects Pity
- Piura (Peru) — city and regional capital Piura
- Piura Region (Peru): geography, history, economy and culture Piura Region
- Pius Adesanmi — Nigerian‑Canadian professor, columnist and satirist Pius Adesanmi
- Piute County, Utah
- Pixar Animation Studios: history, technology, and film legacy Pixar
- Pixel (picture element): definition, structure, color, history, and uses Pixel
- Google Pixel 3: overview, design, camera and legacy Pixel 3
- Pixels per inch (PPI): definition, calculation, and practical importance Pixels per inch
- Pixie Geldof
- Pixie Lott: English singer-songwriter, performer and actress Pixie Lott
- Pixies: folklore beings and the American alternative rock band Pixies
- Pixley, Kansas
- Pixote: A Lei do Mais Fraco (Pixote: The Law of the Weakest) Pixote
- Piya Kay Ghar Jaana Hai (2006 Pakistani television drama) Piya Kay Ghar Jaana Hai
- Piyaa Albela an Indian soap opera
- Piyaro Lund — town and union council in Tando Allahyar District, Sindh Piyaro Lund
- Pizay (Ain) — a small commune in Auvergne-Rhône-Alpes, France Pizay
- Pizieux: a rural commune in Sarthe, Pays de la Loire Pizieux
- Pizy (former municipality in Vaud, Switzerland) Pizy
- Pizza: Origins, Ingredients, Styles, and Cultural Impact Pizza
- Pizza Hut
- Pizzicato: the plucked technique for bowed string instruments Pizzicato
- PJ Harvey (Polly Jean Harvey) PJ Harvey
- PK (Kalashnikov) general-purpose machine gun PK machine gun
- Placard: meaning, forms, uses, and distinguishing features Placard
- Placé (Mayenne) — small commune in Pays de la Loire, France Placé
- Place of Articulation (phonetics) Place of articulation
- Place Value (Positional Notation) in Number Systems Place value
- Placebo: inert treatments, the placebo effect, and their role in medicine Placebo
- Placebo (band)
- Placekicker (football) — role, technique, and importance Placekicker
- Placenta temporary organ in the uterus (womb) of pregnant female mammals
- Placer County, California
- Placerville, California
- Placerville, Idaho — a small mountain community in the United States Placerville, Idaho
- Plácido Domingo
- Placoderms — Armoured Devonian Jawed Fishes Placoderm
- Placodonts: Triassic marine reptiles adapted for shell‑crushing Placodont
- Placozoa: the simplest known multicellular animals Placozoa
- Placy (former commune in Calvados, France) Placy
- Plaffeien (Fribourg) Plaffeien
- Plagiarism: Definition, Types, Consequences, and Prevention Plagiarism
- Plagne (Ain) — commune in Auvergne-Rhône-Alpes Plagne, Ain
- Plagne, Switzerland — former municipality in Jura bernois Plagne, Switzerland
- Plague doctor costume
- Plague of Athens (430–427 BC) Plague of Athens
- Plague of Justinian (6th-century pandemic) Plague of Justinian
- Plagues of Egypt (the Ten Plagues) Plagues of Egypt
- Plaice: species, appearance, habitat and uses Plaice
- Plaid Cymru: Wales's Party of Nationalism and Social Democracy Plaid Cymru
- Plaigne — A small commune in Aude, Occitanie, France Plaigne
- Plain (geography): types, formation, ecology and human uses Plain
- Plain Dealing, Louisiana
- Plain English Campaign: history, aims, awards and influence Plain English Campaign
- Plain text (unformatted textual data) Plain text
- Plain View Doctrine (U.S. Fourth Amendment Exception) Plain view doctrine
- Plain White T's
- Plainfield (place name) Plainfield
- Plainfield, Connecticut
- Plainfield, Iowa: profile of a small Midwestern city Plainfield, Iowa
- Plainfield, New Jersey: Overview, History, and Community Plainfield, New Jersey
- Plains Indians: Indigenous Peoples of the Great Plains and Canadian Prairies Plains Indians
- Plains spadefoot toad (Spea bombifrons) Plains spadefoot toad
- Plains, Georgia
- Plains, Kansas — small High Plains city known for its wide main street Plains, Kansas
- Plains, Pennsylvania (Plains CDP, Luzerne County) Plains, Pennsylvania
- Plains, Texas
- Plaintext (information before encryption) Plaintext
- Plaintiff: the party who initiates a civil action Plaintiff
- Plainview, Texas
- Plainville, Kansas
- Plainville, Massachusetts
- Plamen Oresharski — Bulgarian economist and former prime minister Plamen Oresharski
- Plan 9 from Bell Labs
- Plan 9 from Outer Space — 1959 cult science-fiction film by Ed Wood Plan 9 from Outer Space
- Plan B (Ben Drew) — English musician, rapper and actor Plan B (musician)
- Plan view (top view) in orthographic projection Plan view
- Plan-d'Orgon
- Plan-de-Cuques: commune in Bouches-du-Rhône, southern France Plan-de-Cuques
- Plan-les-Ouates: municipality in the canton of Geneva, Switzerland Plan-les-Ouates
- Planaria — freshwater flatworms noted for simple bodies and regeneration Planaria
- Planck (spacecraft)
- Planck constant It is named after the physicist Max Planck
- Planck epoch — the universe’s earliest quantum-dominated era Planck epoch
- Planck length — the fundamental quantum of length Planck length
- Planck mass
- Planck time
- Planck units: the natural system of measurement defined by fundamental constants Planck units
- Planck's law — spectral distribution of blackbody radiation Planck's law
- Plane (flat surface, aircraft, woodworking tool and other meanings) Plane
- Plane (mathematics)
- Plane (woodworking tool) Plane (tool)
- Plane Stupid — UK direct-action campaign against airport expansion Plane Stupid
- Plane wave
- Planes (2013 film) Planes (movie)
- Planes, Trains and Automobiles (1987 film) Planes, Trains and Automobiles
- Planet large object such as Venus or Earth that orbits a star
- Planet 51 — 2009 Computer-Animated Science-Fiction Comedy Planet 51
- Planet of Exile
- Planet of the Apes (1968 film) Planet of the Apes (1968 movie)
- Planet of the Apes (2001 film) Planet of the Apes (2001 movie)
- Planet Sheen (TV series) Planet Sheen
- Planetarium: domes, projection systems, uses and terminology Planetarium
- Planetary core: composition, structure, and role within planets Planetary core
- Planetary geology: the study of otherworldly rocks, surfaces, and processes Planetary geology
- Planetary nebula: glowing shells from dying low- and intermediate-mass stars Planetary nebula
- Planetary ring
- Planetary science: study of planets, their systems, and processes Planetary science
- Planetary system: structure, discovery, and significance Planetary system
- Planetesimal
- Planets beyond Neptune
- Planetshine — illumination of a moon by light reflected from its planet Planetshine
- Planform (plan view): definition and aircraft wing shapes Planform
- Planken — small mountain village and municipality in Liechtenstein Planken
- Plankinton, South Dakota — city and county seat of Aurora County Plankinton, South Dakota
- Plankton: drifting life in the sunlit oceans Plankton
- Planned Parenthood: U.S. reproductive health provider and advocacy organization Planned Parenthood
- Planning: principles, processes, and practical applications Planning
- Plano, Illinois
- Plano, Iowa
- Plano, Texas
- Planococcaceae: family of Gram-positive bacteria Planococcaceae
- Planquery — a commune in Calvados, Normandy, France Planquery
- Planques — a rural commune in Pas-de-Calais, northern France Planques
- Plans (drawings): definition, types, and uses Plans (drawings)
- Plants: their biology, structure, diversity and human uses Plant
- Plant anatomy: internal structure, tissues, and methods Plant anatomy
- Plant breeding: principles, methods, history and societal importance Plant breeding
- Plant cell: structure, functions, and distinguishing features Plant cell
- Plant City, Florida — overview, history, and community highlights Plant City, Florida
- Plant community
- Plant cutting — vegetative propagation by cuttings Plant cutting
- Plant hormone (phytohormone): roles, types, and significance Plant hormone
- Plant Morphology — Study of Plant Form, Structure, and Development Plant morphology
- Plant pathology (phytopathology) Plant pathology
- Plant physiology: functions, processes, and applications Plant physiology
- Plant propagation: methods, uses, and practical guidance Plant propagation
- Plant sap: composition, transport, functions, and distinctions Plant sap
- Plant Stem: Structure, Function, and Types of Above- and Below-Ground Stems Plant stem
- Plantaginaceae — the plantain family Plantaginaceae
- Plantain (cooking banana): botany, uses, history and cultivation Plantain
- Plantation: large-scale specialized agriculture and its impacts Plantation
- Plantation Key (Florida) — Island in the Upper Florida Keys Plantation Key
- Plantation of Ulster
- Plantation, Florida
- Plantation, Kentucky
- Planthopper (Fulgoromorpha): appearance, life cycle, ecology, and importance Planthopper
- Planzolles — a rural commune in Ardèche, France Planzolles
- Plaque: flat objects, biological films, and arterial deposits Plaque
- Plaquemine, Louisiana
- Plaquemines Parish, Louisiana
- Plasma (ionized matter and related concepts) Plasma
- Plasma (physics): the ionized state of matter and its properties Plasma (physics)
- Plasma display panel (PDP) Plasma display
- Plasma lamp (plasma globe) Plasma lamp
- Plasma window: a magnetically confined plasma interface between vacuum and atmosphere Plasma window
- Plasmid — extrachromosomal DNA elements, biology and applications Plasmid
- Plasmodesma: plant cell intercellular channels Plasmodesma
- Plasmodiidae: family of blood parasites including Plasmodium Plasmodiidae
- Plasmodium: genus of malaria-causing parasitic protozoa Plasmodium
- Plasmodium falciparum: biology, disease, and global impact Plasmodium falciparum
- Plassac (Gironde) — commune in southwestern France Plassac, Gironde
- Plasselb (municipality in Fribourg, Switzerland) Plasselb
- Plaster: materials, types, uses and history Plaster
- Plastic: materials, types, history, uses and environmental issues Plastic
- Plastic bag: materials, uses, impacts, and alternatives Plastic bag
- Plastic explosives: composition, uses, history and safety Plastic explosives
- Plastic Man (Patrick 'Eel' O'Brian) Plastic Man
- Plastic Ono Band — Conceptual rock collective founded by Yoko Ono and John Lennon Plastic Ono Band
- Plastic pollution: causes, impacts, and responses Plastic pollution
- Plastic surgery: reconstructive and cosmetic procedures, techniques, and considerations Plastic surgery
- Plastic Surgery Disasters
- Plastic wrap (cling film): materials, uses, history and environmental issues Plastic wrap
- Plastid (plant and algal organelle) Plastid
- Plat (land map used in subdivision and property records) Plat
- Platanaceae — the plane‑tree family (Platanus) Platanaceae
- Platanus (plane trees): description, distribution, uses and threats Platanus
- Platanus orientalis — the Oriental plane (chenar) Platanus orientalis
- Plate (tableware and tectonic plate) Plate
- Plate armour: construction, history, and uses Plate armour
- Plate block (philately) Plate block
- Plate boundary
- Plate reader (microplate reader) Plate reader
- Plate tectonics: the structure, processes, and effects of Earth's moving plates Plate tectonics
- Plateau (Geography): Elevated Flatlands, Types, Formation, and Uses Plateau
- Plateau d'Hauteville: commune nouvelle in Ain, eastern France Plateau d'Hauteville
- Plateau de Diesse (municipality in Bern, Switzerland) Plateau de Diesse
- Plateau Department (Benin) Plateau Department
- Plateau-Central Region (Burkina Faso) Plateau-Central Region
- Plateaux Department (Republic of the Congo)
- Plateaux Region, Togo
- Platelet (thrombocyte): structure, function, and clinical importance Platelet
- Plateosauridae (Prosauropods): Early Sauropodomorph Dinosaurs Plateosauridae
- Plateosaurus — Late Triassic prosauropod dinosaur Plateosaurus
- Platform
- Platform game (platformer) Platform game
- Platform shoe
- Plating: metal surface coatings — methods, history, and applications Plating
- Platinum (chemical element and metal) Platinum
- Platinum Range (PlayStation budget re-release label) Platinum Range
- Platinum, Alaska
- Plato: Athenian philosopher and founder of the Academy Plato
- Platonic (relating to Plato, his philosophy, and derived uses) Platonic
- Platonic crystal: periodic plate structures that control flexural (bending) waves Platonic crystal
- Platonic love: non-sexual affection and its origins Platonic love
- Platonic realism
- Platonic Solids: The Five Regular Convex Polyhedra Platonic solid
- Platoon (military unit) Platoon
- Platoon (1986 film) Platoon (movie)
- Plats (commune in Ardèche, France) Plats
- Platt Amendment (1901) and its impact on U.S.–Cuba relations Platt Amendment
- Platte City, Missouri
- Platte County, Missouri — Overview, History, and Key Facts Platte County, Missouri
- Platte County, Nebraska — overview, history, geography, and local features Platte County, Nebraska
- Platte County, Wyoming — overview, geography, history, and communities Platte County, Wyoming
- Platte River
- Plattsburg, Missouri — county seat of Clinton County in the Kansas City area Plattsburg, Missouri
- Plattsburgh, New York
- Plattsmouth, Nebraska — county seat on the Missouri River Plattsmouth, Nebraska
- Platy (Xiphophorus): small tropical livebearing aquarium fish Platy
- Platybelodon — the shovel‑tusked gomphothere Platybelodon
- Platypterygius: a Cretaceous ichthyosaur genus Platypterygius
- Platypus (Ornithorhynchus anatinus) Platypus
- Platyzoa: a proposed assemblage of small and flat-bodied protostomes Platyzoa
- Plauen — City of the Vogtland in Saxony, Germany Plauen
- Plautus — Roman comic playwright (Titus Macchius Plautus) Plautus
- Plavilla — small commune in Aude, Occitanie, southern France Plavilla
- Pļaviņas (Latvia) Pļaviņas
- Plaxton Beaver minibus Plaxton Beaver
- Play (behavior, arts, and actions) Play
- Play (behavioral activity) Play (activity)
- Play (Moby album) Play (album)
- Play (theatre): form, genres, history and production Play (theatre)
- Play It Again, Sam (1972 film) Play It Again, Sam (movie)
- Play It Loud (Slade album) Play It Loud
- Play My Music (Jonas Brothers song) Play My Music
- Play of the Month (BBC television anthology series) Play of the Month
- Play therapy: principles, methods, uses, and professional practice Play therapy
- Play with Me Sesame — children's series derived from Sesame Street Play with Me Sesame
- Playaz Circle
- Playback singer: role, history and cultural significance Playback singer
- Playboy: American men's magazine and cultural brand Playboy
- Player character (PC) Player character
- Player killing (PKing): definition, mechanics, history, and social impact Player killing
- Player‑coach: dual role of athlete and coach in team sports Player-coach
- Playford: village and civil parish in Suffolk, England Playford
- Playground: design, equipment, safety, history and benefits Playground
- Playground slide
- Playing cards Playing card
- Playing for Pizza — John Grisham's sports novel Playing for Pizza
- Playing the Field (2012 film) Playing the Field
- Playoffs (sports postseason) Playoffs
- PlayStation (PS1) — Sony's first home video game console and its legacy PlayStation
- PlayStation 2 (PS2) PlayStation 2
- PlayStation 3 (PS3): overview, hardware, models and legacy PlayStation 3
- PlayStation 4 (PS4): Overview, Hardware, Software, and Legacy PlayStation 4
- PlayStation 5 (PS5): Sony's fifth-generation home video game console PlayStation 5
- PlayStation All-Stars Battle Royale crossover fighting video game for the PlayStation
- PlayStation Eye (PlayStation 3 camera peripheral) PlayStation Eye
- PlayStation Move
- PlayStation Network
- PlayStation Portable (PSP): Sony’s first disc-based handheld console PlayStation Portable
- PlayStation Portable system software (PSP firmware) PlayStation Portable system software
- PlayStation Store
- PlayStation Vita (PS Vita) PlayStation Vita
- Playtime Is Over (mixtape) — Nicki Minaj's 2007 debut Playtime Is Over (mixtape)
- Playwright: the craft of writing for the stage Playwright
- Plaza: public square, urban open space and civic center Plaza
- Plaza 440 — 49‑story residential condominium in downtown Chicago Plaza 440
- Plaza Mayor (Madrid) Plaza Mayor of Madrid
- Plaza Suite (1971 film) Plaza Suite
- Pleading (civil procedure) Pleading
- Pleasant Grove, Alabama
- Pleasant Groves, Alabama
- Pleasant Hill, Illinois
- Pleasant Hill, Iowa: Overview, History, and Community Pleasant Hill, Iowa
- Pleasant Hill, Sabine Parish, Louisiana
- Pleasant Plain, Iowa
- Pleasant Valley (census-designated place), Dutchess County, New York Pleasant Valley (CDP), New York
- Pleasant Valley (town), Dutchess County, New York Pleasant Valley (town), New York
- Pleasanton, California
- Pleasanton, Iowa: a concise overview of a small Midwestern city Pleasanton, Iowa
- Pleasants County, West Virginia — overview, history, and features Pleasants County, West Virginia
- Pleasantville, Iowa — small city in Marion County Pleasantville, Iowa