Piracy Piracy is robbery committed at sea, or sometimes on the shore, by an agent without a commission from a sovereignty nation. One who commits piracy by engaging in robbery, pillaging, or plundering at sea is known as a pirate. Seaborne piracy against transport vessels remains a significant issue , particularly in the waters between the Pacific Ocean and Indian Oceans, off the Somalia coast, and in the Strait of Malacca and Singapore, which are used by over 50,000 commercial
	Piranga Piranga is a genus of birds of the tanager family. Several species are bird migration, breeding in North America and wintering in the tropics. These tanagers are found high in tree canopies, and are not very gregarious in their breeding areas. Piranga tanagers pick insects from leaves, or sometimes in flight.
	Piranha The piranhas or piraas are a group of carnivore freshwater fish living in South American rivers. They belong to five genera of the subfamily of Serrasalminae. They are normally about 15 to 25 centimetre long, although reportedly individuals have been found up to 40 centimetre in length.
	Pirogue A pirogue is a small, flat-hulled boat of a design associated particularly with West African fisherman and the Cajuns of the Louisiana marsh. These boats are not usually intended for over-night travel but are light and small enough to be easily taken onto land. The design also allows the pirogue to be easily turned over to drain any water that may get into the boat.
	Piroxicam Piroxicam is a NSAID used to relieve the symptoms of arthritis, primary dysmenorrhoea, pyrexia; and as an analgesic, especially where there is an inflammation component. It is also used in veterinary medicine to treat certain neoplasia expressing cyclooxygenase receptors, such as Urinary bladder, colon_(anatomy), and prostate cancer.
	Pisa Pisa is a city in Tuscany, central Italy, on the right bank of the mouth of the Arno River on the Tyrrhenian Sea. It is the capital city of the Province of Pisa.
	Pisonia Pisonia is a genus of plants.
	Pistachio The Pistachio is a small tree up to 10 m tall, native to mountainous regions of central and southwestern Asia such as the Kopet Dag mountains of Turkmenistan southwest to northeastern Iran and western Afghanistan. It has deciduous pinnate leaf 10-20 cm long.
	Pistacia Pistacia is a genus of ten species in the family Anacardiaceae, native to the Canary Islands, northwest Africa, southern Europe, central and eastern Asia and southern North America. They are small trees and shrubs, growing to 5-15 m tall. The leaf are alternate, pinnately compound, and can be either evergreen or deciduous depending on species.
	Piste A piste is the name given to a marked ski-run or path down a mountain for the purposes of skiing, snowboarding, or other mountain sports.
	Pistia Pistia is a genus of aquatic plant in the family Araceae, comprising a single species, Pistia stratiotes, often called water lettuce. Its native distribution in uncertain, but probably pantropical; it was first described from the Nile near Lake Victoria in Africa.
	Pistol A pistol or handgun is a small firearm intended to be used with one hand.
	Pistol grip On a firearm or other tool, the pistol grip is that portion of the mechanism that is held by the hand and orients the hand in a manner similar to the position one would take with a conventional pistol such as a Colt 1911. For firearms, the pistol grip is generally used by the hand that operates the trigger.
	Pistol Grip
	Piston In general, a piston is a sliding plug that fits closely inside the bore of a cylinder . Its purpose is either to change the volume enclosed by the cylinder, or to exert a force on a fluid inside the cylinder.
	Piston ring A piston ring is an open-ended ring that fits into a groove on the outer diameter of a piston. The three main functions of piston rings in internal combustion engines are: # Sealing the combustion chamber. # Supporting heat transfer from the piston to the cylinder wall. # Regulating motor oil consumption.
	Pisum Pisum is a genus of the family Fabaceae, native to southwest Asia and northeast Africa. It contains one to five species, depending on taxonomic interpretation; the International Legume Database accepts three species, one with two subspecies : *Pisum abyssinicum *Pisum fulvum
	Pit stop In Auto racing, a pit stop is where a racing vehicle stops in the pits during a race for refuelling, new tires, repairs, mechanical adjustments, a driver change, or any combination of the above. The pits usually comprise of a pit lane which runs parallel to the start/finish straight and is connected at each end to the main track, and a row of garages outside which the work is done.
	Pita Pita or pita bread, Arabic ???? Kmaj or ??? ????, Cyrillic ????, Greek language p?ta, Hebrew language ??????? or ???? Pitta, Romanian language pita, Turkish language pide bread) is a round, wheat flatbread made with yeast.
	Pitch Black Pitch Black is a 2000 in film science fiction film, film director by David Twohy. It stars Radha Mitchell and Vin Diesel as its anti-hero, Riddick. Upon the release of the movie's sequel, The Chronicles of Riddick, the title of the DVD release was changed to The Chronicles of Riddick: Pitch Black in order to match Universal Studios' branding strategy.
	Pitch Pine The Pitch Pine is a small-to-medium sized tree, often contorted due to fire or weather. This pine occasionally hybridizes with other pine species such as Loblolly Pine, Shortleaf Pine, and Pond Pine; the last is treated as a subspecies of Pitch Pine by some botanists.
	Pitcher In baseball, the pitcher is the player who throws the baseball from the pitcher's mound toward the catcher to begin each play, with the goal of out a batter who attempts to either make contact with it or draw a base on balls. In the numbering system used to record defensive plays, the pitcher is assigned the number 1.
	Pitcher plant Pitcher plants are carnivorous plants whose prey-trapping mechanism features a deep cavity filled with liquid. It has been widely assumed that the various sorts of pitfall trap evolved from rolled leaves, with selection pressure favouring more deeply cupped leaves over evolutionary time.
	Pitchfork :Vidle]] de:Mistgabel fr:Fourche he:????? nl:Mestvork nds-nl:Wimme ja:??????? pl:Widly fi:Talikko uk:?????
	Pitchstone Pitchstone is a dull black glassy volcanic rock formed when lava cools swiftly. It is similar to but coarser than obsidian. The ridge of An Sgurr on the Isle of Eigg was originally formed as a lava flow in a valley. Pitchstone is very resistant to erosion.
	Pith Pith is a light substance that is found in vascular plants. It consists of soft, spongy parenchyma cells, and is located in the center of the Plant stem. It is encircled by a ring of xylem, and outside that, a ring of phloem. In most plants the pith is solid, but some plants, e.g.
	Pith helmet The pith helmet is a lightweight helmet made of cork or pith typically from the sola or a similar plant , with a cloth cover, designed to shade the wearer's head from the sun. It was formerly much worn by Westerners in the tropics; today it is most frequently used in Vietnam.
	Pitons The Pitons are two volcanic mountains in a World Heritage Site in Saint Lucia. The volcanoes are 770 m and 743 m high respectively and linked by the Piton Mitan ridge.
	Pitot tube A Pitot tube is a measuring instrument used to measure fluid flow velocity, and more specifically, used to determine the airspeed of an aircraft. The Pitot tube is named after its inventor, Italy born France engineer Henri Pitot, and was modified to its modern form by Henry Darcy.
	Pituophis Pituophis is a genus of non-venom colubrid snakes commonly referred to as gopher snakes, pine snakes, and bull snakes. Species within the genus are found throughout the United States and Mexico.
	Pixel A pixel is a single point in a graphic image. Each such information element is not really a dot, nor a square, but an abstract sample . With care, pixels in an image can be reproduced at any size without the appearance of visible dots or squares; but in many contexts, they are reproduced as dots or squares and can be visibly distinct when not fine enough.
	Pizza Pizza or Pizza Pie is the name of an oven-baked, flat, usually round bread covered with tomato sauce and cheese with optional toppings, or a pie#Savoury pies with similar ingredients. The cheese is usually mozzarella or sometimes a mixture of several cheeses such as parmesan, Romano, ricotta or, particularly in the USA, Monterey Jack.
	Placebo For the band Placebo go to Placebo A placebo, from the Latin for "I will please", is an inactive substance, which is administered as if it were a therapy, but which has no therapeutic value other than the placebo effect.
	Placebo effect The placebo effect , first mentioned in 1955 by Henry K. Beecher, M.D. and also known as non-specific effects and the subject-expectancy effect, is the phenomenon that a patient's symptoms can be alleviated by an otherwise ineffective treatment, since the individual expects or believes that it will work.
	Placenta The placenta is an ephemeral organ present only in female Placentalia mammals during gestation . The placenta is composed of two parts, one of which is genetically and biologically part of the fetus, the other part of the mother. It is implanted in the wall of the uterus, where it receives nutrients and oxygen from the mother's blood and passes out waste.
	Placer mining Placer mining refers to the mining of alluvial deposits for minerals. This may be done by Open pit mining or open-cast mining or by various forms of tunneling. Excavation may be accomplished using water pressure, surface excavating equipment or tunneling equipment.
	Plácido Domingo Plcido Domingo (born January 21, 1941) is a world-famous Spain opera tenor, well-known for his versatile, strong voice that is possessed of a ringing and clear tone throughout its range. In addition to his singing roles, he has also taken on conducting opera performances as well as acting as the General Director of the Washington National Opera in Washington, DC and the Los Angeles Opera.
	Placket A placket is where two pieces of fabric are joined together via a fastener, usually Button, Snap_(fastener), or a zipper. Plackets are almost always used to facilitate putting on or taking off the garment, but are sometimes used as a design element as well. The term placket usually refers to the centre-front of a button-front shirt.
	Placodermi The Placodermi are armoured prehistoric fishes known from fossils dating from the late Silurian to the end of the Devonian Period. Their head and thorax were covered by articulated armoured plates and the rest of the body was scaled or naked. Placoderms were among the first of the jawed fish, their jaws likely evolving from the first of their gill arches.
	Plagioclase Plagioclase is a very important series of Silicate minerals minerals within the feldspar family. Rather than referring to a particular mineral with a specific chemical composition, plagioclase is a solid solution series, more properly known as the plagioclase feldspar series .
	Plain In geography, a plain is a large area of landscape with relatively low relief. Plains may be more suitable for farming than plateaus or mountains. An alluvial plain is a landform formed by the deposition of alluvial soil over a long period of time by a river coming from the mountains.
	Plan of Attack Plan of Attack is a 2004 book by the well known author and investigative reporter Bob Woodward. It was promoted as "a behind-the-scenes account of how and why President George W. Bush decided to go to war against Iraq" The book's chief contention, which provides the rationale for its title, is that President Bush planned from early in his presidency to remove Saddam Hussein from power by force, rather than making any serious effort to use diplomacy or other means.
	Planchet A planchet is a round metal disk that is ready to be struck as a coin. An older word for planchet is flan. They are also referred to as blanks.
	Planck's constant Planck's constant is a physical constant that is used to describe the sizes of quantum. It plays a central role in the theory of quantum mechanics, and is named after Max Planck, one of the founders of quantum theory. A closely-related quantity is the reduced Planck constant .
	Planet The International Astronomical Union , the official scientific body for astronomical nomenclature, currently 2006 redefinition of planet "planet" as a celestial body that, within the Solar System, Before the adoption of the 2006 resolution, there was no formally specified scientific definition of "planet", even for our own system.
	Planetary nebula A planetary nebula is an astronomy astronomical object consisting of a glowing shell of gas and Plasma formed by certain types of stars at the end of their lives. They are in fact unrelated to planets; the name originates from a supposed similarity in appearance to gas giants.
	Planimeter A planimeter is a technical drawing instrument used to measure the surface area of an arbitrary two-dimensional shape by tracing the perimeter. The precise way in which they are constructed varies, the main types of mechanical planimeter being polar; linear; and Prytz or "hatchet" planimeters.
	Plankton Plankton are drifting organisms that inhabit the Pelagic zone of oceans, seas, and bodies of fresh water.
	Plans Plans is the fifth studio album by Death Cab for Cutie released on August 30, 2005. The album was nominated for a Grammy Award for Best Alternative Music Album at the 48th Annual Grammy Awards, held February 8, 2006. The vinyl release of this album features the bonus track "Talking Like Turnstiles".
	Plant Plants are a major group of life including familiar organisms such as trees, flowers, herbs, ferns, and mosses. About 350,000 species of plants, defined as seed plants, bryophytes, ferns and fern allies, have been estimated to exist.
	Plant cell Dessutom gillar jag hstar Plant cells are quite different from the cell of the other eukaryotic kingdom's organisms. Their distinctive features are: * A large central vacuole , which maintains the cell's turgor and controls movement of molecules between the cytosol and sap.
	Plantaginaceae The Plantaginaceae Juss. or plantain family, is a family of flowering plants in the order Lamiales. The type genus is Plantago Carolus Linnaeus. In older classifications it used to be the only family of the order Plantaginales, but numerous phylogenetic studies, summarized by the Angiosperm Phylogeny Group, have demonstrated that this taxon should be included within the Lamiales.
	Plantago Plantago is a genus of about 200 species of small, inconspicuous plants commonly called plantains. They share this name with the very dissimilar plantain, a kind of banana. Most are herbaceous plants, though a few are subshrubs growing to 60 cm tall. The leaf are sessile, but have a narrow part near the stem which is a pseudo-petiole.
	Plantago media Plantago media, known as the hoary plantain, is a species of genus Plantago native to central Europe and introduced to parts of the north-east United States. Its generic name is derived from the Latin for Sole; like other members of Plantago, it should not be confused with the plantain, a starchy banana.
	Plantain Plantains are bananas that are generally used for cooking, as contrasted with the soft, sweet banana varieties . Plantains tend to be firmer and lower in sugar content than dessert bananas and are commonly used when green or underripe and therefore starchy. Plantains are a staple food in the tropical regions of the world, treated in much the same way as potatoes and with a similar neutral flavour and texture when unripe.
	Plantar wart Plantar warts are warts caused by the human papillomavirus. They are small lesions that appear on the sole of the foot and are typically "cauliflower-esque" in appearance. They may have small black specks within them that ooze blood when the surface is shaved; these are abnormal capillaries.
	Plantation A plantation is an intentional planting of a crop, on a larger scale, usually for uses other than cereal production or pasture. The term is most often used for plantings of trees and shrubs. The term tends also to be used for plantings maintained on economic bases other than that of subsistence farming.
	Planters Planters is an United States snack food company, best known for its nuts and the Mr. Peanut icon that symbolizes them. Started by Italian people immigrants Amedeo Obici and Mario Peruzzi in Wilkes-Barre, Pennsylvania, in 1906, it was incorporated in 1908 as the Planter Nut & Chocolate Co. Its main products these days are processed Nut of various kinds.
	Planthopper The name planthopper is used to refer to any insect in the infraorder Fulgoromorpha within the Hemiptera. Distributed worldwide, all members of this group are plant-feeders, though surprisingly few are considered pests. The infraorder contains only a single superfamily, Fulgoroidea.
	Plantigrade In mammals, plantigrade locomotion means walking with the podials and metatarsals flat on the ground. Plantigrade locomotion is considered less specialized or less highly evolved than digitigrade and unguligrade locomotion. Humans are an example of a plantigrade species; in humans, the podials and metatarsals constitute the sole of the foot.
	Plasma Plasma may refer to: * Plasma, an ionized gas ** Plasma display, a flat-panel electronic visual display technology * Blood plasma * Whey, also known as milk plasma * Bright green chalcedony, which is sometimes found with small spots of jasper resembling blood drops * In cell biology:
	Plasmid A plasmid is a DNA molecule separate from the chromosome and capable of autonomous replication. It is typically circular and double-stranded. It usually occurs in bacterium, sometimes in eukaryote . Size of plasmids varies from 1 to over 400 Base pairs .
	Plasmin Plasmin is an important enzyme that degrades many blood plasma proteins, most notably fibrin thrombuss. The degradation of fibrin is termed fibrinolysis. It is a serine protease that is released as plasminogen into the circulation and activated by tissue plasminogen activator, urokinase plasminogen activator, thrombin, fibrin and factor XII.
	Plasmodium Plasmodium is a genus of parasitic protozoa, four species of which cause malaria in humans. Other species infect other animals, including birds, reptiles and rodents. In 1898 Ronald Ross demonstrated the existence of Plasmodium in the stomach of the Anopheles mosquito.
	Plasmodium vivax The parasite Plasmodium vivax is the most frequent and widely distributed cause of benign, but recurring, malaria. It is one of four species of parasite that commonly cause malaria infection in humans. It is less virulent than Plasmodium falciparum, the deadliest of the four, and seldom fatal.
	Plaster Plaster of Paris, or simply plaster, is a type of building material based on calcium sulfate hemihydrate, nominally CaSO4*0.5H2O. It is created by heating gypsum to about 150C. CaSO4 2H2O ? CaSO4 0.5H2O + 1.5H2O.
	Plasterer A Plasterer is a tradesman who works with plaster, such as forming a layer of plaster on an interior wall or plaster Molding on ceilings or walls. The process of creating plasterwork, called plastering, has been used in building construction for centuries.
	Plasterwork Plasterwork refers to construction or ornamentation done with plaster, such as a layer of plaster on an interior wall or plaster Molding on ceilings or walls. The process of creating plasterwork, called plastering, has been used in building construction for centuries.
	Plastic Plastic covers a range of synthetic or semisynthetic polymerization products. They are composed of organic chemistry condensation reaction or addition polymers and may contain other substances to improve performance or economics. There are few natural polymers generally considered to be "plastics".
	Plastic bag Plastic bag is a generic name for a flexible, thin-walled container made from plastic and used for carrying products or wastes. Types There are four main types of plastic bags in widespread use: * High Density Poly Ethylene * Low Density Poly Ethylene * degradable * compostable