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  • purine (chemical compound)

    Purine, any of a class of organic compounds of the heterocyclic series characterized by a two-ringed structure composed of carbon and nitrogen atoms. The simplest of the purine family is purine itself, a compound with a molecular formula C5H4N4. Purine is not common, but the purine structure

  • purine skeleton (biochemistry)

    metabolism: Disposal of nitrogen: …and during which a so-called purine skeleton is formed; in the course of this process, nitrogen atoms from glutamine and the amino acids aspartic acid and glycine are incorporated into the skeleton. These nitrogen donors are derived from other amino acids via amino group transfer [26] and the reaction catalyzed…

  • Purishkevich, Vladimir Mitrofanovich (Russian politician)

    Vladimir Mitrofanovich Purishkevich, Russian politician and right-wing extremist who in 1905 was one of the founders of the Union of the Russian People (URP), a reactionary group active before the Russian Revolution and noted for its violent attacks against Jews and leftists. A landowner and

  • Purism (art)

    Purism, in painting, a variant of Cubism developed in France about 1918 by the painter Amédée Ozenfant and the architect and painter Le Corbusier (Charles-Édouard Jeanneret). Ozenfant and Le Corbusier, critical of what they perceived to be a decorative trend in Cubism, advocated a return to clear,

  • purism (linguistics)

    Serbo-Croatian language: Writing, pronunciation, and spelling: …a favourite cultural practice of purism, seeking to replace foreign words with old or newly coined Croatian ones. For Serbian univerzitet ‘university,’ Croatian combined sve ‘all’ and učilište ‘place of learning’ to yield sveučilište. Serbia, for its part, accepted Vuk Karadžić’s new standard and simpler Cyrillic letters but changed one…

  • Puritan Revolution (English history)

    Society of Friends: The rise of Quakerism: …of Seekers gathered during the Puritan Revolution against Charles I to wait upon the Lord because they despaired of spiritual help either from the established Anglican Church or the existing Puritan bodies—Presbyterians, Congregationalists, and Baptists—through which most of them had already passed. To these Seekers came a band of preachers,…

  • puritani, I (opera by Bellini)

    Vincenzo Bellini: The result was I puritani (1835), the last of Bellini’s nine operas; although handicapped by an inept libretto, it is in many ways his most ambitious and beautiful work.

  • Puritanism (religion)

    Puritanism, a religious reform movement in the late 16th and 17th centuries that sought to “purify” the Church of England of remnants of the Roman Catholic “popery” that the Puritans claimed had been retained after the religious settlement reached early in the reign of Queen Elizabeth I. Puritans

  • Puritans (American baseball team)

    Boston Red Sox, American professional baseball team based in Boston. One of the most-storied franchises in American sports, the Red Sox have won nine World Series titles and 14 American League (AL) pennants. Founded in 1901, the franchise (then unofficially known as the Boston Americans) was one of

  • purity (colour)

    colour: The nature of colour: … or tone) refers to relative purity. When a pure, vivid, strong shade of red is mixed with a variable amount of white, weaker or paler reds are produced, each having the same hue but a different saturation. These paler colours are called unsaturated colours. Finally, light of any given combination…

  • purity (anthropology)

    Purification rite, any of the ceremonial acts or customs employed in an attempt to reestablish lost purity or to create a higher degree of purity in relation to the sacred (the transcendental realm) or the social and cultural realm. They are found in all known cultures and religions, both ancient

  • Purity (novel by Franzen)

    Jonathan Franzen: …evident in his next novel, Purity (2015), which centres on a young woman whose mother refuses to reveal her origins. She eventually joins an organization resembling Wikileaks and becomes involved with its haunted leader. Franzen used her travails, and those of a predictably sprawling cast of supporting characters, to muster…

  • Purity (Middle English poem)

    English literature: The revival of alliterative poetry: …homiletic poems called Patience and Purity (or Cleanness), and an elegiac dream vision known as Pearl, all miraculously preserved in a single manuscript dated about 1400. The poet of Sir Gawayne far exceeded the other alliterative writers in his mastery of form and style, and, though he wrote ultimately as…

  • Purity and Danger (work by Douglas)

    dietary law: Interpretation of Jewish laws: …these laws in her book Purity and Danger (1966). She suggested that these notions of defilement are rules of separation that symbolize and help maintain the biblical notion of the distinctness of the Hebrews from other societies. A central element in her interpretation is that each of the injunctions is…

  • Purity, Brethren of (Arab organization)

    Ikhwān aṣ-Ṣafāʾ, (Arabic: Brethren of Purity), a secret Arab confraternity, founded at Basra, Iraq, that produced a philosophical and religious encyclopaedia, Rasāʾil ikhwān aṣ-ṣafāʾ wa khillān al-wafāʾ (“Epistles of the Brethren of Purity and Loyal Friends”), sometime in the second half of the

  • Purkhiser, Erick Lee (American musician)

    Lux Interior, (Erick Lee Purkhiser), American punk musician (born Oct. 21, 1946, Stow, Ohio—died Feb. 4, 2009, Glendale, Calif.), fronted the legendary “psychobilly” rock band the Cramps, which he and his wife, guitarist Poison Ivy (Kristy Wallace), founded in 1976. With a style informed by B

  • Purkinje cell (anatomy)

    Purkinje cell, large neuron with many branching extensions that is found in the cortex of the cerebellum of the brain and that plays a fundamental role in controlling motor movement. These cells were first discovered in 1837 by Czech physiologist Jan Evangelista Purkinje. They are characterized by

  • Purkinje effect (physiology)

    human eye: Spectral sensitivity curve: …photopic (day) vision, the so-called Purkinje shift. It has been suggested that the cones have a pigment that shows a maximum of absorption at 5550 angstroms, but the phenomena of colour vision demand that there be three types of cones, with three separate pigments having maximum absorption in the red,…

  • Purkinje fibre (anatomy)

    Jan Evangelista Purkinje: …parts of the heart (Purkinje fibres; 1839). In describing young animal embryos, he introduced protoplasm as a scientific term.

  • Purkinje shift (physiology)

    human eye: Spectral sensitivity curve: …photopic (day) vision, the so-called Purkinje shift. It has been suggested that the cones have a pigment that shows a maximum of absorption at 5550 angstroms, but the phenomena of colour vision demand that there be three types of cones, with three separate pigments having maximum absorption in the red,…

  • Purkinje, Jan Evangelista (Czech physiologist)

    Jan Evangelista Purkinje, pioneer Czech experimental physiologist whose investigations in the fields of histology, embryology, and pharmacology helped create a modern understanding of the eye and vision, brain and heart function, mammalian reproduction, and the composition of cells. Purkinje’s

  • Purkynë, Jan Evangelista (Czech physiologist)

    Jan Evangelista Purkinje, pioneer Czech experimental physiologist whose investigations in the fields of histology, embryology, and pharmacology helped create a modern understanding of the eye and vision, brain and heart function, mammalian reproduction, and the composition of cells. Purkinje’s

  • purl knit (knitting)

    knitting: …the preceding loop, and the purl stitch, drawn through the back. Some filling knits are fragile because of the dependency of each loop in a vertical row on the stitch next to it. Runs can occur when one loop breaks, releasing other loops in the same row. Filling knits have…

  • purl stitch (knitting)

    knitting: …the preceding loop, and the purl stitch, drawn through the back. Some filling knits are fragile because of the dependency of each loop in a vertical row on the stitch next to it. Runs can occur when one loop breaks, releasing other loops in the same row. Filling knits have…

  • Purlie Victorious (play by Davis)

    Ossie Davis: …Broadway again in the acclaimed Purlie Victorious (1961), a play written by Davis and later adapted for the screen as Gone Are the Days! (1963), which also starred the couple, and as the Broadway musical Purlie (1970). On screen, Davis played a priest who is attacked by the Ku Klux…

  • Purloined Letter, The (short story by Poe)

    The Purloined Letter, short story by Edgar Allan Poe, first published in an unauthorized version in 1844. An enlarged and authorized version was published in The Gift (an annually published gift book containing occasional verse and stories) in 1845 and was collected the same year in Poe’s Tales.

  • Purmerend (Netherlands)

    Noord-Holland: …cattle and cheese markets at Purmerend and Alkmaar. The province’s economy is centred on Amsterdam, the chief commercial centre, and the Zaanstreek industrial area, particularly at Zaandam.

  • Pūrna Swarāj resolution (Indian history)

    India: The Congress’s ambivalent strategy: The Purna Swaraj resolution—proclaimed on January 26, 1930, later to be celebrated as independent India’s Republic Day—called for “complete freedom from the British” but was later interpreted by Prime Minister Nehru as permitting India to remain within the British Commonwealth, a practical concession young Jawaharlal had…

  • pūrṇa-ghạta (religious vessel, Buddhism)

    ghaṭa-pallava: The “full vessel” (pūrṇa-ghaṭa, pūrṇa-kalaśa) is also employed in the rituals of Buddhist, Hindu, and Jain sects as a ceremonial offering to the deity or to an honoured guest and as an auspicious symbol used to decorate shrines and buildings. The vessel is filled with water and vegetation,…

  • pūrṇa-kalása (religious vessel, Buddhism)

    ghaṭa-pallava: The “full vessel” (pūrṇa-ghaṭa, pūrṇa-kalaśa) is also employed in the rituals of Buddhist, Hindu, and Jain sects as a ceremonial offering to the deity or to an honoured guest and as an auspicious symbol used to decorate shrines and buildings. The vessel is filled with water and vegetation,…

  • Purnaiya, Kamala (Indian author)

    Kamala Markandaya, Indian novelist whose works concern the struggles of contemporary Indians with conflicting Eastern and Western values. A Brahman, Markandaya studied at the University of Madras, then worked as a journalist. In 1948 she settled in England and later married an Englishman. Her first

  • Purnaprajna (Hindu philosopher)

    Madhva, Hindu philosopher, exponent of Dvaita (“Dualism”; belief in a basic difference in kind between God and individual souls). His followers are called Madhvas. Madhva was born into a Brahman family. As a youth, he was discovered by his parents, after a four-day search, discoursing learnedly

  • Purnavarman (king of Tarumanegara)

    Tarumanegara: …powerful king of Tarumanegara was Purnavarman, who conquered neighbouring countries and built a canal to improve irrigation. The main product of the kingdom was indigo; its people practiced Buddhism. Chinese sources refer to the kingdom as To-lo-ma.

  • Purnea (India)

    Purnia, city, northeastern Bihar state, northeastern India. It lies east of the Saura River, a tributary of the Ganges (Ganga) River. Purnia is a major rail and road junction and is heavily engaged in agricultural trade. The region is one of the major jute-producing areas of India, and such crops

  • Purnell’s New English Encyclopedia

    encyclopaedia: The 20th century and beyond: …major instances of coproduction involved The New Caxton Encyclopedia, which originated in Italy with Istituto Geografico de Agostini and subsequently appeared in Great Britain, first sold in serial parts as Purnell’s New English Encyclopedia (1966) and then in a bound set of 18 volumes (1966); in France there appeared a…

  • Purnell, James (British politician)

    Gordon Brown: Prime ministership: James Purnell, the secretary of state for work and pensions, resigned from Brown’s cabinet and claimed that Brown’s “continued leadership makes a Conservative victory more, not less likely.…I am therefore calling on you to stand aside to give our party a fighting chance of winning.”…

  • Purnia (India)

    Purnia, city, northeastern Bihar state, northeastern India. It lies east of the Saura River, a tributary of the Ganges (Ganga) River. Purnia is a major rail and road junction and is heavily engaged in agricultural trade. The region is one of the major jute-producing areas of India, and such crops

  • purohita (Hinduism)

    Brahman: The Brahman family priest (purohita) officiates at weddings, funerals, and other ceremonial occasions.

  • puromycin

    animal development: Cleavage: …developing eggs are treated with puromycin, a substance which is known to suppress protein synthesis, cleavage stops immediately. The proteins concerned have not yet been identified. No proteins are synthesized, however, that would foreshadow the future differentiation of parts of the embryo. It is believed that the genes in the…

  • purple (colour)

    Purple, a shade varying between crimson and violet. Formerly, it was the deep crimson colour called in Latin purpura, from the name of the shellfish Purpura, which yielded the famous Tyrian dye. During many ages Tyrian purple was the most celebrated of all dye colours, and it was possibly the first

  • Purple (intelligence device)

    cryptology: Developments during World Wars I and II: …a new cipher machine, code-named Purple by U.S. cryptanalysts, in which rotors were replaced by telephone stepping switches. Because the replacement of Red machines by Purple machines was gradual, providing an enormous number of cribs between the systems to aid cryptanalysts, and because the Japanese had taken a shortcut to…

  • purple crowberry (plant)

    crowberry: Purple crowberry, or rockberry (E. eamesii), is found in the northeastern United States and eastern Canada, and red crowberry (E. rubrum) is native to Chile, Argentina, and the Falkland Islands.

  • purple crown vetch (plant)

    Crown vetch, (Securigera varia), vigorous trailing plant of the pea family (Fabaceae), widely grown in temperate areas as a ground cover. Crown vetch is native to the Mediterranean region and has naturalized in many places; it is considered an invasive species in parts of the United States. The

  • purple foxglove (plant)

    foxglove: …common, or purple, foxglove (Digitalis purpurea) is cultivated commercially as the source of the heart-stimulating drug digitalis. The drug is obtained from the dried leaves.

  • purple gallinule (bird, Porphyrio porphyrio)

    gallinule: The purple gallinule (Porphyrio porphyrio), sometimes called purple swamphen, is about 45 cm long. It occurs around the Mediterranean region and is widely distributed in Africa, southern Asia, and Australia.

  • purple gallinule (bird, Porphyrula martinica)

    gallinule: The purple gallinule of America (Porphyrula martinica), sometimes called water hen or sultana, is about 30 cm long and is bright olive green and purplish blue with a light blue shield, red and yellow bill, and yellow legs and feet. It is found from South Carolina…

  • purple granadilla (plant)

    passion-flower: The purple granadilla (P. edulis) and the yellow granadilla (P. laurifolia), as well as the wild passion-flower, are widely grown in tropical America for their fruit. Passiflora maliformis is the sweet calabash of the West Indies. The size of these fruits usually does not exceed that…

  • Purple Heart (United States military decoration)

    Purple Heart, the first U.S. military decoration, instituted by General George Washington in 1782 and awarded for bravery in action. The records show that only three men received it during the American Revolution, all of them noncommissioned officers. Two of these coveted badges still exist. The

  • Purple Heart, The (film by Milestone [1944])

    Lewis Milestone: War dramas: …1944 Milestone received praise for The Purple Heart, a stirring tale (cowritten by Darryl F. Zanuck) about U.S. Air Force crewmen (Andrews, Richard Conte, and Granger, among others) who are shot down over Tokyo and tried for war crimes by the Japanese. A Walk in the Sun (1945) was a…

  • purple heath (plant)

    heath: The purple, or Scotch, heath, or bell heather (Erica cinerea), is common in Great Britain and western Europe. Its minute flowers yield much nectar. Other British species are cross-leaved heath, or bog heather (E. tetralix); Cornish heath (E. vagans), found also in western Europe; and fringed,…

  • purple heron (bird)

    heron: The purple heron (A. purpurea) is a darker and smaller Old World form.

  • Purple Hibiscus (book by Adichie)

    Chimamanda Ngozi Adichie: …began writing her first novel, Purple Hibiscus (2003). Set in Nigeria, it is the coming-of-age story of Kambili, a 15-year-old whose family is wealthy and well respected but who is terrorized by her fanatically religious father. Purple Hibiscus garnered the Commonwealth Writers’ Prize in 2005 for Best First Book (Africa)…

  • purple honeycreeper (bird)

    honeycreeper: …males; for example, the male purple honeycreeper (Cyanerpes caeruleus), an active, acrobatic little bird that frequents gardens and woodlands in Panama and parts of northern South America, is a stunning blue with black mask and wings; the female is green. The male of the green honeycreeper (Chlorophanes spiza) of Central…

  • Purple Island, The (work by Fletcher)

    Phineas Fletcher: …his religious and scientific poem The Purple Island; or, The Isle of Man (1633).

  • Purple Island: or the Isle of Man, The (work by Fletcher)

    Phineas Fletcher: …his religious and scientific poem The Purple Island; or, The Isle of Man (1633).

  • purple loco (plant)

    locoweed: wootonii), with whitish flowers; crazyweed, or purple loco (Oxytropis lambertii), with pink to purplish flowers; and the showy oxytropis (O. splendens), bearing silvery hairs and rich lavender-pink flowers.

  • purple loosestrife (plant)

    loosestrife: Purple loosestrife (Lythrum salicaria), native to Eurasia and now common in eastern North America, grows 0.6 to 1.8 metres (2 to 6 feet) high on riverbanks and in ditches. It has a branched stem bearing whorls of narrow, pointed, stalkless leaves and ending in tall,…

  • purple mangosteen (tree and fruit)

    Mangosteen, (Garcinia mangostana), handsome tropical tree (family Clusiaceae) native to Southeast Asia and cultivated for its tart-sweet fruit. The mangosteen fruit is highly valued for its juicy, delicate texture and slightly astringent flavour and is commonly eaten fresh, canned, or dried. The

  • purple martin (bird)

    Hirundinidae: ” The purple martin (Progne subis) is the largest North American swallow.

  • purple medic (plant)

    Alfalfa, (Medicago sativa), perennial, cloverlike, leguminous plant of the pea family (Fabaceae), widely grown primarily for hay, pasturage, and silage. Alfalfa is known for its tolerance of drought, heat, and cold and for the remarkable productivity and quality of its herbage. The plant is also

  • Purple Noon (film by Clément [1960])

    Alain Delon: title Purple Noon), based on Patricia Highsmith’s 1955 novel The Talented Mr. Ripley. Delon went on to even greater fame with roles in Luchino Visconti’s Roccco e i suoi fratelli (1960; Rocco and His Brothers) and Il gattopardo (1963; The Leopard) and Michelangelo Antonioni’s L’Eclisse (1962),…

  • Purple People Eaters (football history)

    Minnesota Vikings: …line known as the “Purple People Eaters,” which produced two Hall of Fame members (Alan Page and Carl Eller) and an efficient passing attack led by another future Hall of Fame member, quarterback Fran Tarkenton. Tarkenton paved the way for scrambling quarterbacks by being one of the first signal-callers…

  • purple pitcher plant (plant)

    pitcher plant: Sarraceniaceae: The purple, or common, pitcher plant (S. purpurea) has heavily veined, green to reddish, flaring, juglike leaves that bear downward-pointing bristles to keep prey, including salamanders, from escaping. Its flowers are purple-red. The parrot pitcher plant (S. psittacina) has small, fat, red-veined leaves that are topped by beaklike…

  • Purple Rain (film by Magnoli [1984])
  • Purple Rain (album by Prince)

    Prince: Purple Rain (1984) made him one of the major stars of the 1980s and remains his biggest-selling album. The album, which was the Academy Award-winning soundtrack to a film of the same name, also earned a Grammy Award. Three of its singles were hits: the…

  • Purple Rose of Cairo, The (film by Allen [1985])

    Woody Allen: The 1980s: ” Charming but ultimately downbeat, The Purple Rose of Cairo (1985) was the poignant story of a cinema-going Depression-era shop girl (Farrow) whose lacklustre life is enlivened when a swashbuckling actor (Jeff Daniels) literally walks off the screen and into her world.

  • purple sail (cnidarian)

    Purple sail, (genus Velella), any of a genus of floating marine animals usually classified in the order Siphonophora (class Hydrozoa) and characterized by a saillike pneumatophore, or gas-filled float. Below the sail hang various structures: tentacles armed with nematocysts, or stinging cells;

  • purple sandpiper (bird)

    sandpiper: The purple sandpiper (C. maritima) breeds in foggy Arctic highlands, chiefly in eastern North America and northern Europe, and winters as far north as Greenland and Great Britain. It is grayish with yellow legs and bill and is easily approached in the field. Another Old World…

  • purple snail (gastropod family)

    gastropod: Classification: …shallow to deep ocean waters; purple snails (Janthinidae) float on the ocean surface after building a raft of bubbles; large numbers of bubble shells occasionally blow ashore. Superfamily Aglossa Parasitic or predatory snails either with a reduced radula or with none, jaws often modified into a stylet-shaped structure; many occur…

  • Purple Swamp Hen, and Other Stories, The (short stories by Lively)

    Penelope Lively: The Purple Swamp Hen, and Other Stories was published in 2016.

  • purple swamphen (bird, Porphyrio porphyrio)

    gallinule: The purple gallinule (Porphyrio porphyrio), sometimes called purple swamphen, is about 45 cm long. It occurs around the Mediterranean region and is widely distributed in Africa, southern Asia, and Australia.

  • purple viper’s bugloss (plant)

    bugloss: Purple viper’s bugloss (E. plantagineum) is similar but is larger-flowered and shorter, with softer hair. It is a garden flower.

  • purple wreath (plant)

    Verbenaceae: …a woody evergreen vine called purple wreath, or sandpaper vine (P. volubilis). It bears long, hanging clusters of violet-blue pansylike flowers and has oval leaves so rough as to be likened to sandpaper. The 220 species of the genus Lippia bear clusters of white, rose, or purplish flowers. L. canescens…

  • purple-crowned lorikeet (bird)

    lorikeet: …of southern Australia, breathtakingly colourful purple-crowned lorikeets (Glossopsitta porphyrocephala) gather in small nomadic flocks to eat fruit, pollinating the flowering mallee in the process. Along with a deep purple cap, the head has red-and-yellow cheek pads. The chin and chest are sky blue, and the green wings are ornamented with…

  • purple-leaf plum (plant)

    plum: …number of species, including the purple-leaf plum (P. cerasifera), are used as ornamental plants for their attractive flowers and leaves.

  • purple-net toadflax (plant)

    toadflax: bipartita) and purple-net toadflax (L. reticulata), both of which have purple and orange bicoloured flowers.

  • purpose (psychology)

    infancy: …thus begin to show greater intentionality, and he eventually begins to invent new actions in a form of trial-and-error experimentation. By the 18th month the child has begun trying to solve problems involving physical objects by mentally imagining certain events and outcomes, rather than by simple physical trial-and-error experimentation.

  • Purpose (album by Bieber)

    Justin Bieber: His 2015 album Purpose found an audience beyond his youthful fan base, with each of its first three singles reaching number one on the Billboard Hot 100 chart. Also in 2015, Bieber contributed vocals to Jack Ü’s Grammy Award-winning electro-pop hit “Where Are Ü Now.” Collaborations with other…

  • Purpose Driven Church, The (work by Warren)

    Rick Warren: Warren’s 1995 book, The Purpose-Driven Church, won him renown by focusing on worship, evangelism, fellowship, discipleship, and ministry. It was translated into more than 20 languages and used in more than 120 countries by hundreds of thousands of pastors who adapted its principles to their cultural and denominational…

  • Purpose Driven Life, The (work by Warren)

    Rick Warren: His next work, The Purpose-Driven Life, encouraged individuals to ask, “What am I here for?” and told them that they were planned for God’s pleasure, formed for God’s family, created to become like Christ, shaped for serving God, and made for a mission. Within six years of its…

  • purpose-oriented approach (international law)

    international law: Treaties: …organization, a more programmatic or purpose-oriented approach is used in order to assist the organization in coping with change. A purpose-oriented approach also has been deemed appropriate for what have been described as “living instruments,” such as human rights treaties that establish an implementation system; in the case of the…

  • purposeful behaviour (psychology)

    infancy: …thus begin to show greater intentionality, and he eventually begins to invent new actions in a form of trial-and-error experimentation. By the 18th month the child has begun trying to solve problems involving physical objects by mentally imagining certain events and outcomes, rather than by simple physical trial-and-error experimentation.

  • Purposive Behavior in Animals and Men (work by Tolman)

    Edward C. Tolman: …system in his major work, Purposive Behavior in Animals and Men (1932). He suggested that the unit of behaviour is the total, goal-directed act, using varied muscular movements that are organized around the purposes served and guided by cognitive processes. His system remained behaviourist by its adherence to objective observation…

  • purposive behaviourism (psychology)

    Edward C. Tolman: …system of psychology known as purposive, or molar, behaviourism, which attempts to explore the entire action of the total organism.

  • purpura (colour)

    Purple, a shade varying between crimson and violet. Formerly, it was the deep crimson colour called in Latin purpura, from the name of the shellfish Purpura, which yielded the famous Tyrian dye. During many ages Tyrian purple was the most celebrated of all dye colours, and it was possibly the first

  • purpura (medical disorder)

    Purpura, presence of small hemorrhages in the skin, often associated with bleeding from body cavities and in tissues. It occurs as a result of failure of hemostasis (arrest of bleeding), which may be caused by damage to the wall of small arterial vessels (vascular purpura) in vitamin deficiency

  • Purpura haemastoma (mollusk)

    purple: …the mollusks Stramonita (also called Purpura) haemastoma and Bolinus (formerly Murex) brandaris, the shells of which have been found adjacent to ancient dyeworks at Athens and Pompeii. The colour-producing secretion is contained in a small cyst adjacent to the head of the animal, and this puslike matter, when spread on…

  • Purpuridae (gastropod family)

    gastropod: Classification: rock shells (Purpuridae), and coral shells (Coralliophilidae) are common predators, often boring into shells of their prey; rock shells common in cooler waters, others mostly tropical. Superfamily Buccineacea Scavengers that have lost the mechanisms for boring; dove shells (Columbellidae), mud

  • purring (animal behaviour)

    cat: Special traits: Purring has been described as a low, continuous, rattling hum and often is interpreted as an expression of pleasure or contentment. Purring also occurs in cats that are injured and in pain, however, so that this vocalization can be seen as the cat’s “mantra”—that is,…

  • Purrmann, Hans (German painter)

    Henri Matisse: Revolutionary years: …who included Sarah Stein and Hans Purrmann, organized for him a Left Bank art school, in which he taught off and on until 1911. In 1908 he exhibited in New York City, Moscow, and Berlin.

  • Purron phase (Mexican pre-history)

    Mexico: Pre-Columbian Mexico: …produced as early as the Purron phase (2300–1500 bc).

  • Pursat (Cambodia)

    Chan I: …was crowned at Pursat (Poŭthĭsăt), south of the Tonle Sap (“Great Lake”), in 1516. Ruling from Pursat until 1528, he reorganized the Cambodian army and held the Thais in abeyance. When he gained control of the city of Lovek (between the present Cambodian capital, Phnom Penh, and the Tonle…

  • purse (award)

    horse racing: Match races: …horses, the owners providing the purse, a simple wager. An owner who withdrew commonly forfeited half the purse, later the whole purse, and bets also came under the same “play or pay” rule. Agreements were recorded by disinterested third parties, who came to be called keepers of the match book.…

  • purse (ancient Roman treasury)

    Fiscus, (Latin: “basket”, ) the Roman emperor’s treasury (where money was stored in baskets), as opposed to the public treasury (aerarium). It drew money primarily from revenues of the imperial provinces, forfeited property, and the produce of unclaimed lands. Vespasian created the fiscus

  • purse seine

    commercial fishing: Purse seines and lamparas: …nets and the more modern purse seines. Both are typical gear for pelagic fish schooling in large and dense shoals. When these nets are used, a shoal of fish is first surrounded with a curtain or wall of netting that is buoyed at the surface and weighted at the bottom.…

  • purse seiner

    commercial fishing: Purse seiners: In purse seining, the fish shoal is surrounded by the net, which has a rope that seals the bottom of the net to trap the fish. Small fish may be pumped out of the net, or the net can be hauled on board…

  • purse-web spider (arachnid)

    spider: Annotated classification: Family Atypidae (purse-web spiders) 43 species of Europe, North America, Japan, Myanmar, and Java. 3 tarsal claws; 6 spinnerets; less than 3 cm long; live in closed silk tubes partly below ground; bite prey through tube and pull it in. Suborder Mesothelae (segmented spiders) About 100…

  • purseweb spider (arachnid)

    spider: Annotated classification: Family Atypidae (purse-web spiders) 43 species of Europe, North America, Japan, Myanmar, and Java. 3 tarsal claws; 6 spinnerets; less than 3 cm long; live in closed silk tubes partly below ground; bite prey through tube and pull it in. Suborder Mesothelae (segmented spiders) About 100…

  • purslane (plant)

    Purslane, any of certain small, fleshy annual plants of the genus Portulaca (40–100 species), of the family Portulacaceae. The plants have prostrate, often reddish stems, with spoon-shaped leaves and flowers that open in the sunlight. The common purslane (P. oleracea), or pusley, is a widespread

  • purslane family (plant family)

    Portulacaceae, the purslane family of flowering plants, in the order Caryophyllales, with about 15 genera and 500 species of herbs or small shrubs, native primarily to the Pacific coast of North America and southern South America. Members of the family have leaves that often are fleshy and

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