All articles starting with P

Picaria

Picaria (pedreria, "little stone") is a traditional three-in-a-row board game of the Pueblo peoples of the American Southwest, first described by Stewart Culin in 1907; two players place then slide three counters each, with no captures, and the game is proved a draw.

Picasa

Picasa, also known as Picasa Web Albums, was a free image organizer and photo editor founded in 2001, acquired by Google in 2004, and retired in 2016 in favor of Google Photos; final version 3.9.

PICASSO (dark matter experiment)

PICASSO (Project in Canada to Search for Supersymmetric Objects) was a Canadian dark matter experiment using superheated droplet detectors at SNOLAB, Sudbury, Ontario, later merged into PICO.

Picasso (Mercurian crater)

Picasso crater, a 134 km impact crater on Mercury at 3.44°N, 309.76°E, named for Pablo Picasso in 2010, first imaged by MESSENGER's third flyby, with a floor pit, pyroclastic deposit, and hollows.

Picasso's Blue Period

Picasso's Blue Period (late 1901–mid-1904) is his early phase of near-monochrome blue paintings of poverty, blindness, and despair, triggered by Carles Casagemas's 1901 suicide and followed by the Rose Period.

Picatinny Arsenal

Picatinny Arsenal is a U.S. Army installation in Rockaway Township, New Jersey, leading research, development, and acquisition of guns and ammunition for all U.S. military branches.

Picatinny rail

The Picatinny rail, also known as the STANAG rail, is the standardized mounting rail for scopes, lights, and lasers on firearms, defined by MIL-STD-1913 in 1995.

Piccadilly

Piccadilly, also known as Piccadilly, London, is a major street in Westminster running from Piccadilly Circus to Hyde Park Corner, home to The Ritz and the Royal Academy of Arts.

Piccadilly Circus

Piccadilly Circus is a road junction and public space in London's West End, created in 1819 and known for its illuminated advertising signs and Eros fountain.

Piccadilly line

The Piccadilly line is a deep-level line of the London Underground, running from Cockfosters to Heathrow Airport and Uxbridge. It opened in 1906 and serves 53 stations.

Piccalilli

Piccalilli: a British pickle relish of onions, cauliflower, and cucumber in a turmeric-yellow mustard sauce, first recorded 1769 as piccalillo; in America the name covers chopped pepper, tomato, or chow-chow-style relishes.

Piccaninnie Ponds Karst Wetlands

Piccaninnie Ponds Karst Wetlands, a 862-hectare Ramsar site near Mount Gambier, South Australia, listed 21 December 2012; karst springs over 110 m deep, peat fens, threatened species, and cave diving in The Chasm and The Cathedral.

Piccard Mons

Piccard Mons is a ~225 km wide, ~7 km high mountain on Pluto southwest of Sputnik Planitia, IAU-named in 2019 for physicist Auguste Piccard, and a leading cryovolcano candidate with a large U-shaped summit depression.

Piccolo

Piccolo (ottavino, flautino): the smallest, highest flute, half the concert flute's length, sounding an octave higher, range D5–C8, conical bore, usually wooden; orchestral debut in Beethoven's Fifth Symphony finale.

Piccolo (Dragon Ball)

Piccolo (ピッコロ) is a Namekian warrior in Akira Toriyama's Dragon Ball, born from King Piccolo, once Goku's rival, later Gohan's mentor; fused with Kami into a Super Namek and gained Orange Piccolo in Super Hero.

Piccolo Paradiso

Piccolo Paradiso, Italian for "Little Paradise," is a mountain of three summits up to 3,923 m in the Gran Paradiso massif of the Graian Alps.

Piccolo Teatro (Milan)

Piccolo Teatro di Milano – Teatro d'Europa, Italy's first public repertory theatre, founded 14 May 1947 by Giorgio Strehler, Paolo Grassi, and Nina Vinchi; opened with Gorky's The Lower Depths, runs three venues, and celebrates its 80th anniversary in 2027.

Piccolomini (crater)

Piccolomini is a large, well-preserved impact crater on the southeastern near side of the Moon, about 88 km wide, at the southeastern end of the Rupes Altai scarp.

Oct 20, 2026

Picea

Picea (spruce) is a genus of about 35–50 evergreen conifers in Pinaceae, native to Northern Hemisphere boreal and montane forests, defined by peg-like needle bases and pendulous cones; key species include Picea abies and P. sitchensis.

Picea abies

Picea abies, Norway spruce (gran, Épinette de Norvège), a large Pinaceae conifer native to the Alps, Balkans, Carpathians, and Scandinavia; Europe's key forestry spruce, widely transplanted since the 1500s, Least Concern but drought- and bark-beetle-vulnerable.

Picea breweriana

Picea breweriana, Brewer spruce or weeping spruce, a rare spruce endemic to the Klamath Mountains of southwest Oregon and northwest California, with pendulous ropelike branchlets, cones 8–15 cm, and basal position in the genus Picea.

Picea engelmannii

Picea engelmannii, Engelmann spruce (Columbian spruce, mountain spruce), a long-lived high-elevation conifer of the Rocky Mountains and Cascades from British Columbia to Arizona and New Mexico, typically codominant with subalpine fir, threatened by spruce beetle outbreaks and projected range reduction under warming.

Picea glauca

Picea glauca, white spruce (also Canadian spruce, Black Hills spruce), a dominant boreal conifer of Alaska and Canada. Transcontinental range, 25 m average height, pulp and lumber wood; improved seedlots grow 17% faster.

Picea mariana

Picea mariana, black spruce (bog spruce, swamp spruce), a dominant North American boreal conifer from Alaska to Newfoundland, with semiserotinous cones adapted to fire, Canada's most important pulpwood species, IUCN Least Concern.

Picea rubens

Picea rubens, red spruce (épinette rouge), a medium-sized Pinaceae conifer of eastern North America from the Canadian Maritimes to the southern Appalachians; long-lived, shade-tolerant, IUCN Least Concern, timber and musical-instrument wood.

Picea sitchensis

Picea sitchensis, Sitka spruce (coast, tideland, or yellow spruce), the world's largest spruce, a conifer native to the Pacific coast from Alaska to northern California, widely planted in Britain and Ireland for timber, with acidic-soil, hypermaritime habitat requirements.