Encyclopedia

Plant Plants are a major group of living things including familiar organisms such as trees, flowers, herbs, bushes, grasses, vines, ferns, and mosses. About 350,000 species of plants, defined as seed plants, bryophytes, ferns and fern allies, have been estimated to exist.
Plant (Dungeons & Dragons) In the Dungeons & Dragons fantasy role-playing game, plant is a type of creature, or "creature type". Plant creatures are any type of creature composed of vegetable material which is not merely an ordinary plant.
Plant 42 United States Air Force Plant 42 is a federally owned military aerospace facility in Palmdale, California where aerospace contractors share a common runway complex, and either lease building space from the Air Force, or own their own building outright (commonly referred to as GOCO, or Government Owned Contractor Operated). There are eight separate production sites specially suited for advanced technology and/or "black" program projects.
Plant ally Plant allies are plants grown near crop plants for the purpose of providing some benefit to the crop. Frequently these benefits involve helping with pest control, sometimes by being a more attractive host for the pest, sometimes by attracting predators, and sometimes by producing chemicals that repel or kill pests.
Plant anatomy Plant anatomy or phytotomy is the general term for the study of the structure of plants. However, the description of the external stucture plants is often called plant morphology, hence the term plant anatomy is sometimes reserved for the internal structure of plants.
Plant breeding Plant breeding is the purposeful manipulation of plant species in order to create desired genotypes and phenotypes for specific purposes. This manipulation involves either controlled pollination, genetic engineering, or both, followed by artificial selection of progeny.
Plant Bowen Coal Plant Bowen is a coal-fired, steam-turbine electric generating facility located in Euharlee, GA - approximately 30 miles northwest of Atlanta, GA. It is well-known in the Northwest Georgia area due to its two 305 meter exaust stacks.
Plant collecting Plant collecting refers to a hobby, in which the hobbyist takes identifiable samples of plant species found in nature, dries them, and stores them in a paper sheet album, a simple herbarium, alongside with the information of the finding location, finding date, etc. necessary scientific information.
Plant cuticle Plant cuticles are a protective waxy covering produced only by the epidermal cells (Kolattukudy, 1996) of leaves, young shoots and all other aerial plant organs. The cuticle tends to be thicker on the top of the leaf, but is not always thicker in plants living in dry climates than in those from wet climates, despite the persistent myth.
Plant defense against herbivory Plant defense against herbivory include a range of adaptations evolved by plants to improve their survival and reproduction by reducing the impact of animals that eat them. Plants have evolved an enormous array of mechanical and chemical defenses against herbivores.
Plant Design Management System PDMS as it is known in the 3D CAD industry, is a customizable, multi-user and multi-discipline, engineer controlled design software package for engineering, design and construction projects in, but not limited to, offshore and onshore oil & gas industry, chemical & process plants, mining, pharmaceutical & food industry, power generation and paper industries.
Plant embryogenesis Plant embryogenesis is a sexual or asexual reproductive process that forms new plants. The process of embryogenesis may occur naturally in the plant as a result of sexual fertilization or asexual processes, these embryos are called zygotic embryos and develop into seeds, which germinate giving rise to seedlings.
Plant extract Herbs have been used for centuries in the treatment of many diseases and it has been demonstrated that some of them can have an incredible effect as a herbal treatment for arthritis. The herbal treatment for arthritis is considered to be a form of alternative medicine, thus it will not be prescribed by a conventional doctor.
Plant Explorer Plant Explorer is a software environment, with a graphical user interface modelled on that of Microsoft's Windows Explorer, for computer modelling the operations of a manufacturing plant. It is a part of the Aspect Integrator Platform (AIP) from the Industrial IT Alliance.
Plant hormone Plant hormones (or plant growth regulators, or PGRs) are internally-secreted chemicals in plants that are used for regulating the plants' growth. According to a standard definition, plant hormones are signal molecules produced at specific locations, that occur in very low concentrations, and cause altered processes in target cells at other locations.
Plant litter Plant litter (sometimes called leaf litter, leaf mold or tree litter) is dead plant material, such as leaves, bark, and twigs, that has fallen to the ground. Litter provides habitat for small animals, fungi, and plants, and the material may be used to construct nests.
Plant operator A Plant Operator is a person who supervises the operation of an industrial plant. The term is usually applied to chemical plants such as gas extraction, petrochemical or oil refinery or other chemical processes.
Plant perception (paranormal) In the study of paranormal phenomenon Plant perception, or biocommunication in plant cells, has come to mean a belief that plants feel emotions such as fear and affection. Believers hold that plants have the ability to communicate with humans and other forms of life in a recognizable manner.
Plant perception (physiology) In the study of plant physiology plant perception is a term used to describe mechanisms by which plants recognize changes in the environment. Examples of stimuli which plants perceive and can react to include chemicals, gravity, light, moisture, infections, temperature, oxygen and carbon dioxide concentrations, parasite infestation, physical disruption, and touch.
Plant physiology In botany, plant physiology is the study of the function, or physiology, of plants. Fundamental processes such as photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, nastic movements, photoperiodism, photomorphogenesis, circadian rhythms, environmental stress physiology, seed germination, dormancy and stomata function and transpiration, both part of plant water relations, are studied by plant physiologists.
Plant Patent Act The Plant Patent Act of 1930 is a United States federal law spurred by the work of Luther Burbank. This piece of legislation made it possible to patent new varieties of plants (excluding sexual and tuber-propagated plants (see PVPA).
Plant Physiology (journal) Plant Physiology (ISSN 0032-0889 ) is a peer-reviewed scientific journal that publishes articles on the physiology, biochemistry, cellular and molecular biology, genetics, biophysics, and environmental biology of plants. The journal is published by American Society of Plant Biologists on a monthly basis and has been published since 1926.
Plant sap Sap is the fluid carried inside the xylem or phloem of a plant, circulating to distribute food and water to various parts of the plant. Common uses of the word "sap" include any fluid within a plant body, especially various defensive compounds, such as latex, resins, and mucilage.
Plant stem A stem is one of two main structural axis of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence (flowers), cones or other stems etc.
Plant Sciences at Wageningen University Wageningen University, Plant Sciences is a department of Wageningen University in Wageningen with expertise in the plant and its functioning in its environment. It aims to develop and transfer knowledge to provide a better insight into the possibilities of plants.
Plant tissue culture Plant tissue culture, also called micropropagation, is a practice used to propagate plants under sterile conditions, often to produce clones of a plant. Different techniques in plant tissue culture may offer certain advantages over traditional methods of propagation, including
Plant World Plant World is a plant grower and retailer founded in 1985 as a family business in Devon, United Kingdom to specialize in rare and unusual plants including exotic plants. The company runs a public garden and nursery and also produces a mail order catalogue.
Planta 4ª Planta 4ª ('Fourth Floor') is a 2003 Spanish film directed by Antonio Mercero and starring Juan José Ballesta, Gorka Moreno, Luis Ángel Priego, Alejandro Zafra and Monti Castiñeiras. It was nominated for Best Picture in the 2004 Goya Awards.
Plantagenet Kings of England The Plantagenet Kings of England were descendants of the first House of Anjou, were established as rulers of England through the Treaty of Wallingford, which passed over the claims of Eustace and William, Stephen of Blois's son, in favor of Henry of Anjou, son of the Empress Matilda and her second husband Geoffrey V, Count of Anjou. The soubriquet Plantagenet is said to have come from a [of broom flower] habitually worn by Geoffrey of Anjou, but was not used as a [[surname or house name until the 15th century.
Plantagenet, Western Australia The Shire of Plantagenet, managed from the town of Mount Barker in the Great Southern region of Western Australia and immediately north of Albany, includes the townships of Narrikup,Rocky Gully, and Kendenup as well as the scenic Porongurup Range. The region is noted for agriculture, principally wheat, sheep (wool and meat), beef cattle, wine, canola and olives.
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 Cooking Plantains (pronounced plan-TINS) are a kind of plantains that are generally used for cooking, as contrasted with the soft, sweet banana varieties (which are sometimes called dessert bananas). The North American population got to know the banana first (banana plaintain) and got used to the term "banana" so when the cooking plaintain came around they thought it was a different kind of banana called plaintain, when in fact the generic name is "plaintain" and the specific names are cooking plaintan, banana plaintain, bocadillo plaintain (the little one), etc.
Plantar calcaneocuboid ligament The plantar calcaneocuboid ligament (short calcaneocuboid ligament; short plantar ligament) is a ligament on the bottom of the foot that connects the calcaneus to the cuboid bone. It lies deep to the long plantar ligament.
Plantar digital veins The plantar digital veins arise from plexuses on the plantar surfaces of the digits, and, after sending intercapitular veins to join the dorsal digital veins, unite to form four metatarsal veins; these run backward in the metatarsal spaces, communicate, by means of perforating veins, with the veins on the dorsum of the foot, and unite to form the deep plantar venous arch which lies alongside the plantar arterial arch.
Plantar reflex In medicine (neurology), the Babinski reflex or Babinski sign is a reflex that can identify disease of the spinal cord and brain. It is more properly called the plantar reflex, as Babinski's sign in reality only refers to the pathological form.
Plantarflexion Plantarflexion is the movement which increases the angle between the foot and the leg, as when depressing an automobile pedal. The word "Plantar" translates as "toward the sole" ("Planta").
Plantashun Boyz Plantashun Boyz was a very successful Nigerian hip hop band that comprised of members Ahmedu Augustine Obiabo (popularly known as Blackface), Innocent Ujah Idibia (best known as 2face Idibia) and Chibuzor Orji (Best known as Faze). Following the split of the Band in 2004, they all launched solo career to varying success.
Plantation (settlement or colony) A plantation is a place where people plant things, usually botanics. In the 17th century, settlements and colonies involving active transfer of a colonising population, without concern for the indigenous people were sometimes called 'plantations'.
Plantation aristocrat In the New World, especially in the southern United States, Brazil and Hispanic America with substantial Mestizo and Indio populations, the institution of large semi-feudal semi-commercial estates created, from the 16th century to contemporary era, a class of wealthy, often hereditary land owners who dominate the lives of their subordinate classes and politics of vast areas.
Plantation economy A plantation economy is an economy which is based on agricultural mass production, usually of a few staple products grown on large farms called plantations. Plantation economies are usually dependent on outside forces, due to the fact that the products being harvested en masse are cash crops to be exported.
Plantation era The Plantation Era is a period of the History of the Southern United States from the early 18th century until 1860 and the start of the American Civil War, which ended slavery and destroyed much of the economic landscape of the south.
Plantation Key, Florida Plantation Key, Florida, also known as Plantation, Florida (not to be confused with the city of Plantation in Broward County or the populated place of Plantation in Sarasota), was a populated place on Plantation Key in the Florida Keys, in Monroe County. It was reported to have a population of 4,405 in 1990.
Plantation of Ulster The Plantation of Ulster was a planned process of colonisation which took place in the northern Irish province of Ulster during the early 17th century in the reign of James I of England. English and Scottish Protestants were settled on land that had been confiscated from Catholic Irish landowners in the six counties of Donegal, Coleraine, Tyrone, Fermanagh, Armagh and Cavan, following the Flight of the Earls in 1607.
Plantation tradition Plantation tradition is a genre of literature based in the southern states of the USA that is heavily nostalgic for antebellum times. Although several works idealizing the plantation were written in the decades before the American Civil War, plantation tradition became more popular in the late nineteenth century through the works of Thomas Nelson Page (1853-1922) and Harry Stillwell Edwards (1855-1938).
Plantations of Ireland Plantations in 16th and 17th century Ireland involved the seizure of land owned by the native Irish and granting of it to colonists ("planters") from Britain. This process began under the reign of Henry VIII and continued under Elizabeth I, James I, Charles I, and Cromwell.
Plantations of Leon County Leon County, Florida was a true cotton kingdom. During the 1820s through 1850s Leon County attracted planters from Georgia, Virginia, Maryland, North, South Carolina, plus other states and abroad to its fertile soils and long growing season.
Planters Development Bank Planters Development Bank, more commonly known as Plantersbank, is a bank in the Philippines. It is one of the largest thrift banks in the Philippines, and has the distinction of being the largest private development bank in the Philippines.
Plantet Plantet is a red wine grape that is a hybrid grape created by French hybridist Albert Seibel. The grape is grown primarily in the Loire Valley around Anjou and is known for the high yields that the vine can produce.
Planthopper A planthopper is any insect in the infraorder Fulgoromorpha within the Hemiptera. The name comes from their remarkable resemblance to leaves and other plants of their environment and from the fact that they often "hop" for quick transportation in a similar way to that of grasshoppers.
Planting design The art of design with plant material is related to the art of garden design but has a different emphasis and a different approach. Planting design requires design judgement combined with a good level of horticultural, ecological and cultural knowledge.
Plantronics Colorplus The Plantronics Colorplus was a graphics card for IBM PC computers, first sold in 1982. It was a superset of the then-current CGA standard, using the same monitor standard and providing the same pixel resolutions.
Plants for a Future Plants For A Future (PFAF) is an online not for profit resource for those interested in edible and useful plants of temperate regions. The project currently has two sites in the South West of England where many of the plants are being grown on a trial basis, and maintains a small mail order catalogue.
Plantsman A plantsman is an enthusiastic and knowledgeable gardener (amateur or professional), nurseryman or nurserywoman. "Plantsman" can refer to a male or female person, though the terms plantswoman, or even plantsperson, are sometimes used.
Plantyn (elm hybrid) Plantyn (Anglicized form of Plantijn) was one of three Dutch hybrid elms released in 1973, but was to prove no more resistant to Dutch elm disease than its contemporaries Dodoens and Lobel. Derived from a crossing of the Dutch hybrids 202 (U.
Planula A planula is the free-swimming, flattened, ciliated, bilaterally symmetric larva of a hydrozoan cnidarian. It navigates through the water until it reaches a hard substrate where it anchors and grows into a polyp.
Planxty Planxty was an Irish folk music band formed in the 1970s, consisting of Christy Moore (vocals, acoustic guitar, bodhran), DĂłnal Lunny (bouzouki, guitars), Andy Irvine (mandolin, mandola, bouzouki, hurdy-gurdy, harmonica) and Liam O'Flynn (uilleann pipes, tin whistle).
Plaquemine Senior High School Plaquemine Senior High School is a coeducational public high school located in Plaquemine, Louisiana at 59595 Belleview Drive, Plaquemine, LA 70764. It schools grades eight to twelve and is administered by the Iberville Parish School Board.
Plas Brondanw Plas Brondanw () in Carreg Llanfrothen, Gwynedd, North Wales, was the family home of Clough Williams-Ellis, creator of the Italianate village Portmeirion, and elements of similar architectural styles can be seen at both locations.
Plas Johnson John Johnson Jr. (b 21 July 1931, Donaldson, Louisiana), known since childhood as Plas Johnson, is an American tenor saxophonist, probably most familiar as the lead on Henry Mancini’s "The Pink Panther Theme".
Plas Newydd Plâs Newydd or Plas Newydd, located in Llanfairpwll, Anglesey, Wales, is the country seat of the Marquess of Anglesey. It is not to be confused with the house of the same name at Llangollen; the family's other seat being at Beaudesert, Staffordshire.
Plas y Brenin Plas y Brenin, is currently the The National Mountain Centre for Wales (UK). The Centre, is situated in Dyffryn Mymbyr the Mymbyr Valley, and is less than a quarter of a mile south-west of the centre of Capel Curig on the A4086 road.
Plasa PLASA is the Professional Lighting And Sound Association, a UK-based trade organisation representing the 500+ individual and corporate members drawn from the technical services sector. Its members include manufacturers and distributors of stage and entertainment lighting, sound, rigging and similar products and services, and affiliated professionals in the area.
Plaskett (crater) Plaskett is a prominent lunar impact crater that is located on the southern hemisphere on the far side of the Moon. It lies only a few hundred kilometers north of the lunar south pole, and the sunlight it receives is at a low angle.
Plaskett's star Plaskett's Star (formal name HR 2422 Monocerotis) is a spectroscopic binary at a distance of around 6600 light-years. It is one of the most massive binary stars known, with a total mass of about one hundred times that of the Sun.
Plasma (album) Plasma is Trey Anastasio's first live album. The two-disc set features live tracks recorded during Trey's summer and fall tour in 2002 with his dectet, which included a guitar, bass, saxophones, trumpet, trombone, tuba, flute, percussion, keyboards, and drums.
Plasma (KDE) Plasma will be the new desktop and panel user interface tool for KDE 4, the next major release of the K Desktop Environment. This will combine the KDE panel, the desktop, and SuperKaramba into one application, providing an API for developers to write widgets and mini-applications called plasmoids, to place on the desktop and panel.
Plasma (physics) In physics and chemistry, a plasma is typically an ionized gas, and is usually considered to be a distinct state of matter in contrast to solids, liquids, and gases because of its unique properties. "Ionized" means that at least one electron has been dissociated from, or added to, a proportion of the atoms or molecules.
Plasma acceleration Plasma acceleration is a technique for accelerating charged particles, such as electrons, positrons and ions, using an electric field associated with an electron plasma wave. The wave is created by the passage of a very brief laser or electron pulse through the plasma.
Plasma arc loudspeaker A plasma arc loudspeaker or plasma-dynamic loudspeaker is a loudspeaker that creates sound by varying air pressure through a corona discharge or electric arc. It is an evolution of William Duddell's "singing arc" of 1900 and modern research into spacecraft propulsion in the form of the ion thruster.
Plasma arc waste disposal Plasma arc waste disposal is a method of waste management which uses the extreme high temperature created by a plasma torch (or arc), to break down waste into steam and gas used for power generation, and hard solid rock-like waste (slag) which can be used in construction. The process is intended to be a net generator of electricity and to allow waste to be used completely, avoiding the need for landfill.
Plasma arc welding Plasma arc welding (PAW) is an arc welding process similar to gas tungsten arc welding (GTAW). The electric arc is formed between an electrode (which is usually but not always made of a sintered tungsten) and the workpiece.
Plasma cam PlasmaCAM is a metalworking term referring to the precision metal cutting system developed by PlasmaCAM, Inc. The system uses a desktop computer running proprietary software to control an electro-pneumatic torch mounted on a table to cut large sheets of metal.
Plasma cleaning Plasma cleaning involves the removal of impurities and contaminants from surfaces through the use of an energetic plasma created from gaseous species. Gases such as argon and oxygen, as well as mixtures such as air and hydrogen/nitrogen are used.
Plasma cosmology Plasma cosmology is a non-standard cosmologyIt is described as such by advocates and critics alike. In the February 1992 issue of Sky & Telescope ("Plasma Cosmology"), Anthony Peratt describes it as a "nonstandard picture".
Plasma cutting Plasma cutting is a process used to cut steel and other metals (or sometimes other materials) using a plasma torch. In this process, an inert gas (in some units, compressed air) is blown at high speed out of a nozzle; at the same time an electrical arc is formed through that gas from the nozzle to the surface being cut, turning some of that gas to plasma.
Plasma display A plasma display panel (PDP) is a type of flat panel display now commonly used for large TV displays (typically above 32"). Many tiny cells located between two panels of glass hold an inert mixture of noble gases (neon and xenon).
Plasma lamp Plasma lamps (also variously plasma globes, balls, domes, spheres, or orbs) are novelty items which were most popular in the 1980s. The plasma lamp was invented by Nikola Tesla after his experimentation with high frequency currents in an evacuated glass tube for the purpose of studying high voltage phenomena.
Plasma membrane redox system The plasma membrane redox system is an aspect of the cell membrane that exports unneeded hydrogen atoms from redox reactions. It is useful when in the process of aging the mitochondria's ability to perform OXPHOS is compromised through DNA damage to mitochondrions.
Plasma oscillation In physics, plasma oscillations, often referred to as "Langmuir waves" or "plasma waves," are periodic oscillations of charge density in conducting media such as plasmas or metals. The particle resulting from the quantization of these oscillations is the plasmon.
Plasma osmolality Plasma osmolality is a measure of the concentration of substances such as sodium, chloride, potassium, urea, glucose, and other ions in human blood. It is calculated as the osmoles of solute per kilogram of solvent.
Plasma parameter The plasma parameter is a number, denoted by capital Lambda, Λ, which measures the average number of electrons contained within a Debye sphere (a sphere of radius the Debye length) in a plasma (but note that the word parameter is usually used in plasma physics to refer to bulk plasma properties in general: see plasma parameters). It is defined as:
Plasma parameters Plasma parameters define various characteristics of a plasma, an electrically conductive collection of charged particles that responds collectively to electromagnetic forces. Plasma typically takes the form of neutral gas-like clouds or charged ion beams, but may also include dust and grains.
Plasma polymerization Plasma polymerization uses plasma sources to generate a gas discharge that provides energy to activate or fragment gaseous or liquid monomer, often containing a vinyl group, in order to initiate polymerization.
Plasma propulsion engine A plasma propulsion engine is an engine which uses accelerated plasma for propulsion. Though far less powerful than conventional atmospheric rocket engines, plasma engines are able to operate at higher efficiencies and for longer periods of time.
Plasma receiver It may have been Donald Gurnett, University of Iowa Professor of Physics, who invented the Plasma receiver. Gurnett has been intimately involved in the key space probes sent since 1962 (Ijun III, Voyager I and II, Galileo and Cassini amongst others).
Plasma speaker Plasma speakers (sometimes called flame speakers if the source of the plasma is combustion rather than gas ionization) are a form of loudspeaker which vary the intensity of a plasma, rather than using a magnetic field to push or pull a conventional driver, to create compression waves in air (which a listener perceives as sound).
Plasma spraying Plasma spraying, one of the thermal spraying family, is a materials processing technique for producing coatings and free-standing parts using a plasma jet. Deposits having thickness from micrometers to several millimeters can be produced from a variety of materials - metals, ceramics, polymers and composites.
Plasma stealth Plasma stealth is a proposed process that uses ionized gas to reduce the radar cross section (RCS) of an aircraft. Interactions between electromagnetic radiation and ionized gas have been extensively studied for a variety of purposes, including the possible concealment of aircraft from radar that plasma stealth theorizes.
Plasma Torpedo (Halo) The Plasma Torpedo is a fictional Covenant starship-mounted energy weapon in the fictional Halo universe. These torpedo tubes are often mounted on the lateral areas of a Covenant Capital Ship, and are used on most Covenant starships - frigates, destroyers, carriers, and certain classes of cruisers.
Plasma Torpedo (Star Trek) In the Star Trek fictional universe, plasma torpedoes are weapons used in starship combat. They were first employed by a prototype Romulan Bird of Prey class starship in 2266, in a strike against a string of Federation outposts along the Romulan Neutral Zone; the events of this battle were depicted in the Star Trek episode "Balance of Terror".
Plasma window The plasma window (also plasma shield,See "Plasma bubble could protect astronauts on Mars trip", NewScientist, 17 July 2006, is a technology that fills a volume of space with plasma] confined by a [[magnetic field. With current technology, this volume is quite small and the plasma is generated as a flat plane inside a cylindrical space.
Plasma-based weaponry Plasma-based weaponry is any group of weapons designed to use high-energy ionized gas or "plasma", typically created by superheating, as a projectile. Research in this field of weaponry is in its infancy.
Plasma-enhanced chemical vapor deposition Plasma Enhanced Chemical Vapor Deposition (PECVD) is a process mainly to deposit thin films from a gas state (vapor) to a solid state on some substrate. There are some chemical reactions involded in the process which occur after creation of a plasma of the reacting gases.
Plasma-powered cannon A plasma cannon (also called an electricothermal accelerator) is an experimental projectile weapon, which accelerates its projectile, by producing a positive pressure, which expels the projectile from a pipe cposed at one end by a plasma discharge and the associated thermal expansion of air. A plasma cannon can thus be called a type of firearm, which uses a plasma discharge instead of a chemical propellant (e.
Plasmadynamics and Electric Propulsion Laboratory [and Electric Propulsion Laboratory (PEPL) is a University of Michigan] laboratory facility for [[ion thruster|electric propulsion and plasma application research. The primary goals of PEPL is to increase efficiency of electric propulsion systems, understand integration issues of plasma thrusters with spacecraft, and to identify non-propulsion applications of electric propulsion technology.
Plasmagnetic Plasmagnetic Technology uses a laser-generated plasma and an alternating magnetic field to create a levitating force for hovercraft. Electric currents are created in the plasma through the process of electromagnetic induction by the alternating magnetic field of an onboard electromagnet.
Plasmalogen A plasmalogen is an ether lipid, with an ether-linked alkene (double bond next to the link), also known as vinyl-ether, at the sn-1 position of the glycerol. The second carbon (sn-2) has a typical ester-linked fatty acid, and the third carbon usually has a phospholipid head group like choline or ethanolamine.
Plasmapheresis Plasmapheresis (from the Greek plasma, something molded, and apheresis, taking away) is the removal, treatment, and return of (components of) blood plasma from blood circulation. It is thus an extracorporeal therapy.
Plasminogen activator inhibitor-2 Plasminogen activator inhibitor-2 (placental PAI) is a coagulation factor which inactivates tPA & urokinase. It is only present in relevant quantities during pregnancy, as it is produced by the placenta, and may explain partially the increased rate of thrombosis during pregnancy.
Plasmodesmata Plasmodesmata (singular, plasmodesma) are microscopic channels of plants facilitating transport and communication between individual cells. Unlike animal cells, plant cells are protected by an impermeable cell wall; and as such, plasmodesmata are required for intercellular activity.

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