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  • pillwort (plant)

    fern: Annotated classification: …rooted in the substrate—Marsilea (waterclover), Pilularia (pillwort), and Regnellidium—with about 75 species found nearly worldwide. Order Cyatheales (tree ferns) Family Cyatheaceae (scaly tree ferns) Stems erect and mostly

  • Pilniak, Boris (Russian writer)

    Boris Pilnyak, Soviet writer of novels and stories, prominent in the 1920s. Pilnyak spent his childhood in provincial towns near Moscow, in Saratov, and in a village on the Volga river. He attended high school in Nizhny Novgorod and a commercial institute in Moscow. In his autobiography he stated

  • Pilnyak, Boris (Russian writer)

    Boris Pilnyak, Soviet writer of novels and stories, prominent in the 1920s. Pilnyak spent his childhood in provincial towns near Moscow, in Saratov, and in a village on the Volga river. He attended high school in Nizhny Novgorod and a commercial institute in Moscow. In his autobiography he stated

  • Pilo, Carl Gustav (Scandinavian artist)

    Western painting: Scandinavia: One such portraitist was Carl Gustav Pilo, who, though trained in Stockholm, executed many frankly Venetian portraits during his years as court painter in Copenhagen. Another was Lorentz Pasch the Younger, who trained under Pilo in Copenhagen, although he subsequently worked mainly in Sweden. Other painters of Swedish origin…

  • Pilobolus (genus of fungi)

    Pilobolus, a cosmopolitan genus of at least five species of fungi in the family Pilobolaceae (order Mucorales) that are known for their explosive spore dispersal. Pilobolus species feed saprobically on the feces of grazing animals. These fungi are diminutive, usually less than 10 mm (0.4 inch) in

  • pilocarpine (chemical compound)

    cholinergic drug: …that is employed therapeutically is pilocarpine, a selective muscarinic-receptor agonist that is used in eyedrops to constrict the pupil and to decrease the intraocular pressure that is raised in the disease glaucoma.

  • Pilón, El (mountain, Canary Islands, Spain)

    Teide Peak: Teide is the peak atop El Pilón, a 492-foot- (150-metre-) high volcanic cone that rises from a crater on the upper reaches of the mountain El Teide, which is itself a conglomeration of several volcanoes rising within a 10-mile- (16-km-) wide caldera called Las Cañadas. Snow covers the summit only…

  • Pilon, Germain (French sculptor)

    Germain Pilon, French sculptor whose work, principally monumental tombs, is a transitional link between the Gothic tradition and the sculpture of the Baroque period. A sculptor’s son, Pilon was employed at age 20 on the decoration of the tomb of King Francis I at Saint-Denis. His earlier work

  • pilos (Greek headwear)

    pileus: …Greek sailor’s hat called the pilos. In Roman times the head was generally left uncovered, but commoners and freed slaves sometimes wore the felt pileus.

  • Pílos (ancient site, Greece)

    Pylos, any of three sites in Greece. The most important of them is identified with the modern Pylos, the capital of the eparkhía (“eparchy”) of Pylia in the nomós (department) of Messenia (Modern Greek: Messinía), Greece, on the southern headland of the Órmos (bay) Navarínou, a deepwater shipping

  • Pílos Bay (bay, Greece)

    Bay of Navarino, small, deep, and almost landlocked bay of the Ionian Sea (Modern Greek: Ióvio Pélagos) in the nomós (department) of Messenia (Messinía), in the southwestern Peloponnese (Pelopónnisos), Greece. Known also as Pylos (Pýlos) Bay after Homeric Pylos, which has been identified farther to

  • Pilosa (order of mammals)

    xenarthran: Pilosa: Sloths and anteaters are the living members of the order Pilosa, whose name refers to the animals’ hairiness. Three families exist today, encompassing five genera and nine species. Six families, primarily ground sloths, are extinct. The order Pilosa is further subdivided into the suborder…

  • Pilosocereus chrysacanthus (plant)

    old man cactus: …or woolly torch (Cephalocereus palmeri); golden old man (Pilosocereus chrysacanthus); old woman (Mammillaria hahniana); Chilean old lady (Eriosyce senilis); and old man of the mountain (Cleistocactus trollii).

  • Pilostyles (plant)

    Stemsucker, (genus Pilostyles), genus of 9–20 species of parasitic plants in the family Apodanthaceae. Stemsuckers primarily parasitize woody shrubs of the pea family (Fabaceae) and are considered endoparasites, meaning they live almost entirely within the stems of their host plants and obtain

  • pilot (aeronautics)

    traffic control: History: , the pilot), this means short periods of high concentration and stress (takeoffs and landings) with relatively long periods of low activity and arousal. During this long-haul portion of a flight, a pilot is much more concerned with monitoring aircraft status than looking around for nearby planes.…

  • pilot black snake (reptile)

    rat snake: black rat snake, or pilot black snake (Elaphe obsoleta obsoleta), of the eastern United States usually is about 1.2 m (about 4 feet) long but may exceed 2.5 m (8 feet). It is black, with whitish chin and throat—like the true black snake (see racer)—but…

  • pilot book (navigation)

    navigation: Sailing instructions: …to coastal navigation was the pilot book, or periplus, in which the courses to be steered between ports were set forth in terms of wind directions. These books, of which examples survive from the 4th century bc, described routes, headlands, landmarks, anchorages, currents, and port entrances. No doubt the same…

  • Pilot Charts (work by Maury)

    shipping route: Maury’s Pilot Charts, containing recommended routes, earned him the title of “Pathfinder of the Seas.” Within a few years, as steam propulsion was introduced and wind ceased to be a navigational consideration, modern shipping lanes were gradually adopted. They are based simply on the fact that…

  • pilot fish

    Pilot fish, (Naucrates ductor), widely distributed marine fish of the family Carangidae (order Perciformes). Members of the species are found in the open sea throughout warm and tropical waters. The pilot fish is elongated and has a forked tail, a lengthwise keel on each side of the tail base, and

  • Pilot Rock (hill, Arizona, United States)

    Petrified Forest National Park: Pilot Rock (6,235 feet [1,900 metres]), in the northwestern corner of the northern lobe, is the park’s highest point. Much of the northern lobe is designated as a wilderness area.

  • pilot whale (mammal)

    Pilot whale, (genus Globicephala), either of two species of small, slender toothed whales of the dolphin family Delphinidae. They are characterized by a round bulging forehead, a short beaklike snout, and slender pointed flippers. The short-finned pilot whale (Globicephala macrorhynchus) and the

  • pilot, automatic (aeronautics)

    Automatic pilot, device for controlling an aircraft or other vehicle without constant human intervention. The earliest automatic pilots could do no more than maintain an aircraft in straight and level flight by controlling pitch, yaw, and roll movements; and they are still used most often to

  • Pilot, The (novel by Cooper)

    The Pilot, novel by James Fenimore Cooper, published in two volumes in 1823. The work, which was admired by Herman Melville and Joseph Conrad for its authentic portrayal of a seafaring life and takes place during the American Revolution, launched a whole genre of maritime fiction. It features a

  • Pilot; A Tale of the Sea, The (novel by Cooper)

    The Pilot, novel by James Fenimore Cooper, published in two volumes in 1823. The work, which was admired by Herman Melville and Joseph Conrad for its authentic portrayal of a seafaring life and takes place during the American Revolution, launched a whole genre of maritime fiction. It features a

  • pilota (court games)

    Pelota, (Spanish: “ball”, ) any of a number of glove, racket, or bat court games requiring a rubber-cored ball. These games arose from the old French game known as jeux de paume. Varieties of this game are played in many parts of the world. The variations of pelota can be classified as either jeux

  • Pilote de guerre (work by Saint-Exupéry)

    Antoine de Saint-Exupéry: Pilote de guerre (1942; Flight to Arras) is a personal reminiscence of a reconnaissance sortie in May 1940 accomplished in a spirit of sacrifice against desperate odds. While in America he wrote Lettre à un otage (1943; Letter to a Hostage), a call to unity among Frenchmen, and Le…

  • piloting (vehicle operation)

    traffic control: Traffic elements: …must be considered by the pilot in directing the vessel. Wind also can strongly influence ship movement, both for sailing vessels that use wind for power, and for motorized vessels. Limitations in visibility posed by nighttime conditions, fog, rain, or snow also strongly influence ship control and safety; indeed, environment…

  • piloting (aeronautics)

    traffic control: History: , the pilot), this means short periods of high concentration and stress (takeoffs and landings) with relatively long periods of low activity and arousal. During this long-haul portion of a flight, a pilot is much more concerned with monitoring aircraft status than looking around for nearby planes.…

  • piloto mayor (Spanish title)

    Amerigo Vespucci: …occupied the influential post of piloto mayor (“master navigator”) in Sevilla (1508–12). The name for the Americas is derived from his given name.

  • Pilots (American baseball team)

    Milwaukee Brewers, American professional baseball team based in Milwaukee, Wisconsin. The Brewers play in the National League (NL), but they spent their first 29 seasons (1969–97) in the American League (AL). The team that would become the Brewers was founded in 1969 in Seattle as the Pilots. After

  • pilotweed (plant, Silphium species)

    Silphium: Compass plant, or pilotweed (S. laciniatum), is a prairie plant with large, deeply cut, lance-shaped leaves. It may grow to 3.5 metres (about 12 feet) and has a tall flower stalk with solitary large flowers.

  • Piloty, Karl Theodor (German artist)

    Karl von Piloty, the foremost representative of the Realist style of painting in Germany. Piloty was the younger brother of Ferdinand Piloty, a noted lithographer. In 1840 he entered the Munich Academy as a student; two years later he studied under Julius Schnorr von Carolsfeld. The young painter

  • Piloty, Karl von (German artist)

    Karl von Piloty, the foremost representative of the Realist style of painting in Germany. Piloty was the younger brother of Ferdinand Piloty, a noted lithographer. In 1840 he entered the Munich Academy as a student; two years later he studied under Julius Schnorr von Carolsfeld. The young painter

  • Pilsen (Czech Republic)

    Plzeň, city, western Czech Republic. It lies in the fertile Plzeň basin, where several tributaries gather to form the Berounka River. On a busy trade route between Prague and Bavaria, Plzeň was first recorded in the 10th century, chartered in 1292, and fortified in 1295 by King Wenceslas II. It was

  • Pilsko, Mount (mountain, Slovakia)

    Beskid Mountains: …[1,725 m]) in Poland and Mount Pilsko (5,108 feet [1,557 m]) in Slovakia. Iron deposits in the northwest foothills of the Beskids led to the establishment of the iron and steelworks of the Ostrava district in what is now the Czech Republic.

  • Pilsner beer

    beer: Types of beer: …waters to produce the famous Pilsner beer, which became the standard for highly hopped, pale-coloured, dry lagers. Dortmunder is a pale lager of Germany, and Munich has become associated with dark, strong, slightly sweet beers with less hop character. The dark colour comes from highly roasted malt, and other characteristic…

  • Piłsudski, Józef (Polish revolutionary and statesman)

    Józef Piłsudski, Polish revolutionary and statesman, the first chief of state (1918–22) of the newly independent Poland established in November 1918. After leading a coup d’état in 1926, he rejected an offer of the presidency but remained politically influential while serving as minister of defense

  • Piłsudski, Józef Klemens (Polish revolutionary and statesman)

    Józef Piłsudski, Polish revolutionary and statesman, the first chief of state (1918–22) of the newly independent Poland established in November 1918. After leading a coup d’état in 1926, he rejected an offer of the presidency but remained politically influential while serving as minister of defense

  • Piltdown man (anthropological hoax)

    Piltdown man, (Eoanthropus dawsoni), proposed species of extinct hominin (member of the human lineage) whose fossil remains, discovered in England in 1910–12, were later proved to be fraudulent. Piltdown man, whose fossils were sufficiently convincing to generate a scholarly controversy lasting

  • Piltur og stúlka (work by Thorodssen)

    Jón Thoroddsen: Thoroddsen’s Piltur og stúlka (1850; Lad and Lass), finished just before he went back to Iceland to become a district judge, is an unpretentious love story that reveals his gift for concise satirical sketches of people and places. (In it he included one of his best lyrics.) Lad and Lass…

  • Pilularia (plant)

    fern: Annotated classification: …rooted in the substrate—Marsilea (waterclover), Pilularia (pillwort), and Regnellidium—with about 75 species found nearly worldwide. Order Cyatheales (tree ferns) Family Cyatheaceae (scaly tree ferns) Stems erect and mostly

  • pilum (spear)

    legion: …famous flexibility and force; the pilum, a 2-metre (7-foot) javelin used for both throwing and thrusting; and the gladius, a 50-centimetre (20-inch) cut-and-thrust sword with a broad, heavy blade. For protecton each legionary had a metal helmet, cuirass, and convex shield. In battle, the first line of maniples attacked on…

  • Piluoge (Tai ruler)

    Nanzhao: Piluoge, the leader of one small tribal state, extended his control over the five neighbouring kingdoms while acting in alliance with China, which needed an ally against the aggressive Tibetans. Once unification was complete, Piluoge established Nanzhao’s centre of power near Lake Er. Geographic factors…

  • pilus (microbiology)

    bacteria: Flagella, fimbriae, and pili: Many bacteria are motile, able to swim through a liquid medium or glide or swarm across a solid surface. Swimming and swarming bacteria possess flagella, which are the extracellular appendages needed for motility. Flagella are long, helical filaments made of a single type of…

  • Piluzhena (Buddha)

    Vairochana, (Sanskrit: “Illuminator”) the supreme Buddha, as regarded by many Mahayana Buddhists of East Asia and of Tibet, Nepal, and Java. Some Buddhists regard Vairochana, or Mahavairochana, as a being separate from the five “self-born” Dhyani-Buddhas, one of whom is known as Vairochana. Among

  • PIM (handheld computer)

    PDA: Those PIMs, or personal information managers, were more user-friendly and could connect to personal computers (PCs), and they had stylus interfaces and upgrade capabilities. In addition, later versions offered e-mail access and the option to download e-books. These improved devices still faced compatibility issues, however.

  • Pim Commission of 1934–1935 (African history)

    Southern Africa: Basutoland, Bechuanaland, and Swaziland: …were severely castigated by the Pim Commission of 1934–35, but, despite modest reforms, the territories remained poor and neglected.

  • Pim, Sir Alan (British colonial official)

    Zambia: Colonial rule: …by a visiting financial expert, Sir Alan Pim. In a report to the Colonial Office, he urged more public investment in roads, schools, and health services, for Africans as well as whites. Missionaries ran many primary schools, but in 1942 only 35 Africans were receiving secondary education.

  • Pima (people)

    Pima, North American Indians who traditionally lived along the Gila and Salt rivers in Arizona, U.S., in what was the core area of the prehistoric Hohokam culture. The Pima, who speak a Uto-Aztecan language and call themselves the “River People,” are usually considered to be the descendants of the

  • Pima language

    Uto-Aztecan languages: …Uto-Aztecan division are as follows:

  • Piman language

    Uto-Aztecan languages: …Uto-Aztecan division are as follows:

  • Pimelodidae (fish)

    ostariophysan: Annotated classification: Family Pimelodidae (long-whiskered catfishes) Similar to Bagridae but lack nasal barbels. Food, aquarium fishes. Size to 1.3 metres (about 4 feet), 65 kg (145 pounds). South and Central America. About 31 genera, at least 85 species. Family Trichomycteridae (candirus and other parasitic catfishes) Operculum (gill

  • Pimen (Russian patriarch)

    Pimen, 14th Russian Orthodox patriarch of Moscow and of all Russia. He served as spiritual leader of his church during the final years of official Soviet repression and the subsequent period of religious renewal following the dissolution of the U.S.S.R. Pimen was tonsured a monk in 1927 and o

  • Pimenta (plant genus)

    allspice: …type of pepper, called it pimenta, hence its botanical name and such terms as pimento and Jamaica pepper. The first record of its import to Europe is from 1601.

  • Pimenta diocia (tree and spice)

    Allspice, tropical evergreen tree (Pimenta diocia, formerly P. officinalis) of the myrtle family (Myrtaceae), native to the West Indies and Central America and valued for its berries, the source of a highly aromatic spice. Allspice was so named because the flavour of the dried berry resembles a

  • Pimenta officinalis (tree and spice)

    Allspice, tropical evergreen tree (Pimenta diocia, formerly P. officinalis) of the myrtle family (Myrtaceae), native to the West Indies and Central America and valued for its berries, the source of a highly aromatic spice. Allspice was so named because the flavour of the dried berry resembles a

  • Pimenta racemosa (plant)

    bay tree: The bay rum tree, or simply bay (Pimenta racemosa), has leaves and twigs that, when distilled, yieldoil of bay, which is used in perfumery and in the preparation of bay rum.

  • Pimenta, Alberto (Portuguese poet)

    Portuguese literature: From monarchy to republic: …Ana Hatherly, Herberto Helder, and Alberto Pimenta. Hatherly created poetry that used graphic design as an element of composition. Pimenta’s theatrical works are marked by extravagant cultural and linguistic transgressions and self-conscious iconoclasm.

  • pimento (plant cultivar, Capsicum annuum)

    Pimiento, (Capsicum annuum), any of various mild peppers in the nightshade family (Solanaceae). The term pimiento, from the Spanish for “pepper,” is applied to several cultivars of Capsicum annuum that possess a distinctive flavour but lack pungency. Those include the European paprikas, from which

  • Pimephales notatus (fish)

    minnow: …good bait species is the bluntnose minnow (P. notatus), an olive-coloured species up to 10 cm (4 inches) long. Others include the 6-centimetre fathead minnow (P. promelas) and the common shiner (Notropis cornutus), a blue and silver minnow up to 20 cm long. The golden shiner, or American roach (Notemigonus…

  • Pimephales promelas (fish)

    minnow: Others include the 6-centimetre fathead minnow (P. promelas) and the common shiner (Notropis cornutus), a blue and silver minnow up to 20 cm long. The golden shiner, or American roach (Notemigonus cryseleucas), a larger, greenish and golden minnow attaining a length of 30 cm and a weight of 0.7…

  • Pimic language

    Uto-Aztecan languages: …Uto-Aztecan division are as follows:

  • pimiento (plant cultivar, Capsicum annuum)

    Pimiento, (Capsicum annuum), any of various mild peppers in the nightshade family (Solanaceae). The term pimiento, from the Spanish for “pepper,” is applied to several cultivars of Capsicum annuum that possess a distinctive flavour but lack pungency. Those include the European paprikas, from which

  • Pimiko (Japanese ruler)

    Himiko, first known ruler of Japan and the supposed originator of the Grand Shrine of Ise, still considered the most important Shintō sanctuary in Japan. According to Japanese legend, Himiko was the daughter of the emperor Suinin (fl. 1st century bc–1st century ad), who gave her custody of the

  • Pimiku (Japanese ruler)

    Himiko, first known ruler of Japan and the supposed originator of the Grand Shrine of Ise, still considered the most important Shintō sanctuary in Japan. According to Japanese legend, Himiko was the daughter of the emperor Suinin (fl. 1st century bc–1st century ad), who gave her custody of the

  • Pimlott, Steven Charles (British opera and theatre director)

    Steven Charles Pimlott, British opera and theatre director (born April 18, 1953 , Stockport, Cheshire, Eng.—died Feb. 14, 2007 , Colchester, Essex, Eng.), directed plays ranging from classical Shakespeare to West End musicals as well as opera. Pimlott was staff producer (1976–78) for the English

  • Pimm’s Cup (beverage)

    Pimm’s Cup, a British drink consisting of a gin-based liqueur (Pimm’s No. 1 Cup) that is mixed with sparkling lemonade or ginger ale and served in a highball glass with ice, assorted fruits, and mint. James Pimm, the owner of a London oyster bar, invented the drink sometime between 1823 and 1840.

  • Pimm’s No. 1 Cup (beverage)

    Pimm’s Cup, a British drink consisting of a gin-based liqueur (Pimm’s No. 1 Cup) that is mixed with sparkling lemonade or ginger ale and served in a highball glass with ice, assorted fruits, and mint. James Pimm, the owner of a London oyster bar, invented the drink sometime between 1823 and 1840.

  • pimozide (drug)

    Tourette syndrome: …medication for Tourette syndrome, but pimozide, fluphenazine, clonazepam, and clonidine are also effective in reducing the frequency and intensity of tics.

  • pimpernel (plant)

    Pimpernel, (genus Anagallis), any of several plants of the primrose family (Primulaceae), consisting of about 30 species of low herbs mostly native to western Europe. Most species are prostrate in habit. The plant has leaves that are opposite or in whorls and small, solitary flowers that are

  • Pimpinella anisum (herb)

    Anise, (Pimpinella anisum), annual herb of the parsley family (Apiaceae), cultivated chiefly for its fruits, called aniseed, the flavour of which resembles that of licorice. Native to Egypt and the eastern Mediterranean region, anise is cultivated in southern Europe, southern Russia, the Middle

  • Pimpinone (work by Telemann)

    Georg Philipp Telemann: Legacy: …were the most successful, particularly Pimpinone. His orchestral works consist of suites (called ouvertures), concerti grossi, and concerti. His chamber works are remarkable for their quantity, the great variety of instrumental combinations, and the expert writing for each instrument.

  • pin (wire fastener)

    Pin, the small, pointed and headed piece of stiff wire used to secure clothing or papers. In mechanical and civil engineering the term pin, or more properly pin fastener, designates a peg- or boltlike device designed to fasten machine and structural components together or to keep them properly

  • pin (bowling)

    bowling: Lanes and equipment: The pins are 15 inches (38 centimetres) tall and arranged in a triangle formation with the point or No. 1 pin at the head of the formation facing the bowler. The centres of the pin spots are 12 inches (30.5 centimetres) apart. The pins have a…

  • PIN

    computer science: Social and professional issues: …providing the proper card and personal identification number (PIN).

  • pin (machine component)

    Pin fastener, a steel pin, usually cylindrical, that can keep machine parts in proper alignment or fasten them together. The illustration shows several types of pin fasteners in common use. Hardened and precisely shaped dowel pins are used to keep machine components in accurate alignment; they are

  • pin (nuclear reactor)

    nuclear reactor: Fuel types: The tubes, called pins or rods, measure approximately 1 cm (less than half an inch) in diameter and roughly 3 to 4 metres (10 to 13 feet) in length. The tubes are bundled together into a fuel assembly, with the pins arranged in a square lattice. The uranium…

  • pin cherry (tree)

    ecological disturbance: Disturbance frequency and recovery: The biology of pin cherries (Prunus pensylvanica) illustrates an extension of this theme. In the course of secondary succession in forests of the eastern United States and southern Canada, these small trees grow into gaps and are abundant for periods of about 10 to 25 years; over time,…

  • pin fastener (machine component)

    Pin fastener, a steel pin, usually cylindrical, that can keep machine parts in proper alignment or fasten them together. The illustration shows several types of pin fasteners in common use. Hardened and precisely shaped dowel pins are used to keep machine components in accurate alignment; they are

  • pin flower (plant)

    pollination: Structural: …the individuals have so-called “pin” flowers, which possess short stamens and a long style, giving the stigma a position at the flower’s mouth, whereas the other half have “thrum” flowers, in which the style is short and the stamens are long, forming a “thrumhead” at the opening of the…

  • pin link (chain drive device)

    chain: Roller chains are assembled from pin links and roller links. A pin link consists of the two side plates connected by two tightly fitted pins. A roller link consists of two side plates connected by two tightly fitted bushings on which hardened steel rollers are free to rotate. When assembled,…

  • pin mold (order of fungi)

    fungus: Annotated classification: Order Mucorales (pin molds) Parasitic or saprotrophic; filamentous; nonmotile spores (aplanospores); coenocytic mycelium; asexual reproduction by formation of sporangiospores; example genera include Mucor, Parasitella, Phycomyces, Pilobolus, and Rhizopus. Order Endogonales

  • pin oak (tree)

    Pin oak, either of two species of North American ornamental and timber trees belonging to the red oak group of the genus Quercus in the beech family (Fagaceae). The term is especially given to Quercus palustris, found on bottomlands and moist upland soils in the eastern and central United States.

  • PIN photodiode (electronics)

    telecommunications media: Optoelectronic receivers: …for optical links are the positive-intrinsic-negative (PIN) photodiode and the avalanche photodiode (APD). These optical receivers extract the baseband signal from a modulated optical carrier signal by converting incident optical power into electric current. The PIN photodiode has low gain but very fast response; the APD has high gain but…

  • pin tumbler (lock)

    lock: Early history.: …the type known as a pin tumbler or, from its widespread use in Egypt, an Egyptian lock. It consists of a large wooden bolt, which secures the door, through which is pierced a slot with several holes in its upper surface. An assembly attached to the door contains several wooden…

  • Pin Up Girl (film by Humberstone [1944])

    H. Bruce Humberstone: …Payne and Alice Faye, and Pin Up Girl (1944), a Grable vehicle. Also popular was the comedy Wonder Man (1945), in which Kaye played twins

  • pin-clover (plant)

    Geraniales: Erodium cicutarium (pin-clover), a Mediterranean species now naturalized in the United States, is a weed, though in California it is grown as a forage crop.

  • pin-fall wrestling

    wrestling: …supine, for a brief instant; pin-fall wrestling requires that the opponent be held in such a position for a measurable length of time; and submission wrestling requires the opponent to vocally or visually signal defeat by his own choice.

  • Pin-hsien (China)

    Binxian, county town, southern Heilongjiang sheng (province), northeastern China. It is situated on the eastern outskirts of Harbin, about 12 miles (20 km) south of the Sungari (Songhua) River. It is a collecting centre of a prosperous and productive agricultural district that supplies a large part

  • pin-pallet watch

    watch: Mechanical watches: …in cheaper watches (known as pin-pallet watches).

  • Pin-yin romanization (Chinese writing system)

    Pinyin romanization, system of romanization for the Chinese written language based on the pronunciation of the Beijing dialect of Mandarin Chinese. The gradual acceptance of Pinyin as the official transcription used in the People’s Republic of China signaled a commitment to promote the use of the

  • pinacate bug (insect)

    darkling beetle: The pinacate bug (Eleodes) is large and smooth with no hindwings. In dry climates the wing covers (elytra) are fused together to reduce evaporation of water from the body. When disturbed, the bug elevates the hind part of its body and secretes a foul-smelling oily fluid…

  • Pinaceae (tree family)

    Pinaceae, the pine family of conifers (order Pinales), consisting of 11 genera and about 220 species of trees (rarely shrubs) native to northern temperate regions. Fir (Abies), Keteleeria, Cathaya, Douglas fir (Pseudotsuga), hemlock (Tsuga), spruce (Picea), golden larch (Pseudolarix), larch (or

  • pinacocyte (biology)

    sponge: Water-current system: …found among the cells (pinacocytes), which line the outer surface of the sponge. After passing through a system of incurrent canals and cavities, also lined with pinacocytes, the water reaches the flagellated chambers, enters them through openings (prosopyles), and leaves through other openings (apopyles). The water is expelled through…

  • pinacoderm (sponge)

    sponge: Pinacocytes, collencytes, and other cell types: Pinacocytes form the pinacoderm, a single cell layer found on the body surface and lining the canals. Various types of pinacocytes occur—basipinacocytes are in contact with the surface to which the sponge is attached, exopinacocytes are found on the surface of the sponge, and endopinacocytes line the canals.…

  • pinacoid (crystallography)

    form: …as follows:

  • Pinacoteca (museum, Vatican City, Europe)

    Vatican Museums and Galleries: The Pinacoteca, founded by Pope Pius VI in 1797, has been housed in its present gallery (commissioned by Pope Pius XI) since 1932. It has an outstanding collection of Italian religious paintings and also includes Russian and Byzantine painting.

  • pinacotheca (gallery)

    Pinacotheca, a picture gallery in either ancient Greece or ancient Rome. The original pinacotheca, which housed the tablets or pictures honouring the gods, formed the left wing of the Propylaea of the Acropolis in Athens. Evidence from ancient manuscripts indicates that the pictures were separate

  • Pinafore, H.M.S. (work by Gilbert and Sullivan)

    Arthur Sullivan: …Sorcerer (1877), was followed by H.M.S. Pinafore (1878), whose eventual success was phenomenal, and The Pirates of Penzance (1879, New York City; 1880, London).

  • Pinakes (work by Callimachus)

    Callimachus: …the most famous was the Pinakes (“Tables of Those Who Have Distinguished Themselves in Every Form of Culture and of What They Wrote”) in 120 books. This work consisted of an elaborate critical and biographical catalog of the authors of the works held in the Library of Alexandria.

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