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  • Slingin’ Sammy (American football player)

    Sammy Baugh, first outstanding quarterback in the history of American professional gridiron football. He played a major role in the emergence of the forward pass as a primary offensive tactic in the 1930s and ’40s. He led the National Football League (NFL) in passing in 6 of his 16 seasons

  • slingshot (racing car)

    drag racing: …most familiar professional categories are Top Fuel (powered by nitromethane), Funny Cars (nitromethane and methanol), Pro Stock (gasoline), Pro Stock Bikes (nitromethane-powered motorcycles), and Pro Stock Trucks (gasoline).

  • slingshot (weapon)

    sling: …ancient hand weapon is the slingshot, a forked stick with an elastic band attached for hurling small pellets.

  • slingshot technique (astronomy)

    spaceflight: Planetary: This gravity-assist, or slingshot, technique has been used numerous times to send planetary probes to their destinations. For example, the Galileo probe during its six-year voyage to Jupiter swung by Venus once and Earth twice in order to reach its ultimate target in 1995.

  • sliothar (sports equipment)

    hurling: The ball, or sliothar, has a cork centre, wound with wool and covered with leather, and is 9–10 inches (22.9–25.4 cm) in circumference. It may be caught in the hand before hitting but not thrown or lifted; it may also be juggled or carried on the blade of…

  • slip (crystals)

    Slip, in engineering and physics, sliding displacement along a plane of one part of a crystal relative to the rest of the crystal under the action of shearing forces—that is, forces acting parallel to that plane. Much of the permanent, or plastic, deformation of materials under stress is the result

  • slip (part of plant)

    bulbil: Bulbils, called offsets when full-sized, fall or are removed and planted to produce new plants. They are especially common among such plants as onions and lilies.

  • slip (pottery material)

    Barbotine ware: …pottery decorated with a clay slip applied by means of a technique first employed on Rhenish pottery prior to the 3rd century ad. The slip was applied by piping, in the same way icing is applied to cakes. It was used to adorn the edges of flat dishes with such…

  • slip carving (design technique)

    pottery: Incising, sgraffito, carving, and piercing: …to the sgraffito technique is slip carving: the clay body is covered with a thick coating of slip, which is carved out with a knife, leaving a raised design in slip (champlevé technique). Slip carving was done by Islamic and Chinese potters (Song dynasty).

  • slip casting (forming)

    traditional ceramics: Slip casting: A different approach to the forming of clay-based ceramics is taken in slip casting of whiteware, as shown in Figure 1. As mentioned above, with sufficient water content and the addition of suitable dispersing agents, clay-water mixtures can be made into suspensions called…

  • slip face (geology)

    sand dune: Formation and growth of dunes: …slips down the slope or slip face. When this happens, the dune form is in equilibrium, and the dune moves forward as a whole, sand being eroded from the windward side and deposited on the lee.

  • slip plane (physics)

    slip: …on one side of the slip (or glide) plane do not slide simultaneously from one set of positions to the next. The atoms move sequentially one row at a time into the next position along the plane because of structural defects or spaces, called edge dislocations, in the crystal that…

  • slip recovery system (electrical engineering)

    electric motor: Wound-rotor induction motors: This arrangement, normally called a slip recovery system, provides speed control with acceptable efficiency.

  • slip ring (rotor part)

    electric motor: Wound-rotor induction motors: …insulated conducting rings (known as slip rings) mounted on an internal part of the rotor shaft. Carbon brushes provide for external electric connections.

  • slip song (narrative song)

    Broadside ballad, a descriptive or narrative verse or song, commonly in a simple ballad form, on a popular theme, and sung or recited in public places or printed on broadsides for sale in the streets. Broadside ballads appeared shortly after the invention of printing in the 15th century and were

  • slip stage (theatrical device)

    theatre: Development of stage equipment: Slip stages allowed large trucks to be stored in the wings or rear stage and then slid into view. New systems for flying were developed. Hydraulic stages made it possible to raise sections of the stage, tilt them or even rock them to simulate, for…

  • Slip, The (album by Nine Inch Nails)

    Nine Inch Nails: …Ghosts I–IV and the song-oriented The Slip (2008) as free digital downloads from the Nine Inch Nails Web site. He returned to a major record label, however, for Hesitation Marks (2013), on which he continued to build dynamic songs from tense textured grooves. Nine Inch Nails later dropped the EP…

  • slip-decorated celadon (Korean art)

    Punch’?ng pottery, decorated celadon glazed ceramic, produced in Korea during the early Chos?n period (15th and 16th centuries). Punch’?ng ware evolved from the celadon of the Kory? period. Combined with the celadon glaze is the innovative Chos?n surface decoration, which includes inlaying,

  • slip-joint pliers (tool)

    pliers: Slip-joint pliers have grooved jaws, and the pivot hole in one member is elongated so that the member can pivot in either of two positions in order to grasp objects of different size in the most effective way. On some pliers the jaws have a…

  • slipforming (construction)

    construction: Use of reinforced concrete: …for concrete high-rise construction is slipforming. In this process, a continuous vertical element of planar or tubular form is continuously cast using a short section of formwork that is moved upward with the pouring process. Slipforming has been used to build a number of very tall structures in Canada, including…

  • Slipher, Vesto (American astronomer)

    Vesto Slipher, American astronomer whose systematic observations (1912–25) of the extraordinary radial velocities of spiral galaxies provided the first evidence supporting the expanding-universe theory. Born on an Indiana farm, Vesto Slipher studied at Indiana University (B.A., 1901; M.A., 1903;

  • Slipher, Vesto Melvin (American astronomer)

    Vesto Slipher, American astronomer whose systematic observations (1912–25) of the extraordinary radial velocities of spiral galaxies provided the first evidence supporting the expanding-universe theory. Born on an Indiana farm, Vesto Slipher studied at Indiana University (B.A., 1901; M.A., 1903;

  • slipknot

    knot: A slipknot results when, in tying an overhand knot, a loop instead of the rope’s end is slipped through the first loop. Such a knot is easily slipped loose by pulling on its free end. Shoelaces are usually tied with a double slipknot. A square knot…

  • slipmouth (fish)

    Slipmouth, any of certain fishes (order Perciformes) that are characterized by slimy bodies with small scales and greatly protrusible mouths. The presence of luminescent bacteria cultured within an organ surrounding the esophagus causes the bodies of slipmouths to glow. They derive their name from

  • slipped disk

    Herniated disk, displacement of part of the rubbery centre, or nucleus, of a cartilaginous disk from between the vertebrae so that it presses against the spinal cord. Pain occurs in the arms if the protrusion occurs at the level of the neck (between the fifth and sixth or sixth and seventh cervical

  • slipped epiphysis (pathology)

    joint disease: Aseptic necrosis: One type (slipped epiphysis) is characterized by partial or complete tearing away of an epiphysis, usually as the result of injury. The epiphysis at the upper end of the thighbone is particularly susceptible. Osgood-Schlatter disease is an analogous lesion, but it affects a growth centre (anterior tibial…

  • slipped tendon (bird disease)

    Perosis, a disorder of chicks, turkey poults, and young swans, characterized by enlargement of the hock, twisted metatarsi, and slipped tendons; it can be largely eliminated by adding manganese and choline to the

  • slipper flower (plant)

    Slipper flower, any of some 240 to 270 species of flowering plants native from Mexico to South America and named for their flowers’ pouchlike shape. They belong to the genus Calceolaria and the family Calceolariaceae. Many large-flowered and showy varieties of slipper flower exist in the florist

  • slipper limpet (snail)

    slipper shell: The common Atlantic slipper shell (C. fornicata), often called slipper limpet, is about 4 cm (1.5 inches) long and yellowish; it is abundant from Nova Scotia to Texas. In addition, C. fornicata has been introduced to the west coast of the United States, the coastal waters of…

  • slipper lobster (crustacean)

    lobster: The mainly tropical slipper lobsters (Scyllaridae) are rather flat and clawless, with antennae flattened into broad plates. Most species are short and small and of little economic importance. Deep-sea lobsters (Polychelidae) are soft, weak animals with claws; some are blind. None is commercially important.

  • slipper orchid (plant)

    Lady’s slipper, (subfamily Cypripedioideae), subfamily of five genera of orchids (family Orchidaceae), in which the lip of the flower is slipper-shaped. Lady’s slippers are found throughout Eurasia and the Americas, and some species are cultivated. Lady’s slipper orchids are usually terrestrial,

  • slipper shell (gastropod)

    Slipper shell, (genus Crepidula), any marine snail belonging to the family Calyptraeidae (subclass Prosobranchia, class Gastropoda), in which the humped or flattened shell has a decklike half partition inside. Slipper shells occur worldwide in shallow waters. Adults are fixed to rocks or live

  • slipperwort (plant)

    Slipper flower, any of some 240 to 270 species of flowering plants native from Mexico to South America and named for their flowers’ pouchlike shape. They belong to the genus Calceolaria and the family Calceolariaceae. Many large-flowered and showy varieties of slipper flower exist in the florist

  • slippery elm (plant)

    Slippery elm, Large-leaved elm (Ulmus rubra or U. fulva) of eastern North America that has hard wood and fragrant inner bark. A gluelike substance in the inner bark has long been steeped in water as a remedy for throat ailments, powdered for use in poultices, and chewed as a thirst quencher, among

  • Slippery Rock University of Pennsylvania (school, Slippery Rock, Pennsylvania, United States)

    Slippery Rock University of Pennsylvania, public, coeducational institution of higher learning in Slippery Rock, Pennsylvania, U.S. It is part of Pennsylvania’s State System of Higher Education. It comprises colleges of Arts and Sciences, Education, Health and Human Services, and Information

  • slippery slope argument (logic)

    Slippery slope argument, in logic, the fallacy of arguing that a certain course of action is undesirable or that a certain proposition is implausible because it leads to an undesirable or implausible conclusion via a series of tenuously connected premises, each of which is understood to lead,

  • Slipstream (album by Raitt)

    Bonnie Raitt: … (1998), Souls Alike (2005), Grammy-winning Slipstream (2012), and Dig in Deep (2016). She was inducted into the Rock and Roll Hall of Fame in 2000.

  • Slipstream (film by Hopkins [2007])

    Anthony Hopkins: Directorial efforts: …August (1996) and the surreal Slipstream (2007). The former was adapted from Anton Chekhov’s play Uncle Vanya, and the latter followed an aging screenwriter as he encountered his characters in real life. Hopkins played the lead in both films.

  • slipware (pottery)

    Slipware, pottery that has been treated, in one way or another, with semiliquid clay, or slip, sometimes called barbotine. Originally, defects of body colour suggested the use of slip, either white or coloured, as a wash over the vessel before firing. The decorative uses of slip later evolved

  • Slipy, Yosyf (Ukrainian metropolitan)

    Ukraine: The last years of Stalin’s rule: In April 1945 Metropolitan Yosyf Slipy and the entire hierarchy in Galicia were arrested and later sentenced to long imprisonment (only Slipy survived, to be released in 1963 and sent into exile in Rome). After arrests and intimidation of the clergy, a synod held in Lviv in March 1946—in…

  • slit (weaving)

    tapestry: Techniques: …it forms a kind of slit, or relais, which may be treated in any of five different ways. First, it may simply be left open, as in Chinese silk tapestries, which are called kesi (cut silk) for that reason. Second, it may be left open on the loom but sewed…

  • slit drum (musical instrument)

    Slit drum, percussion instrument formed by hollowing a tree trunk through a lengthwise slit and sounded by the players’ stamping feet or by beating with sticks; the edges of the slit are usually of different thicknesses, so as to produce different pitches. Unlike membrane drums, which are

  • slit gong (musical instrument)

    Slit drum, percussion instrument formed by hollowing a tree trunk through a lengthwise slit and sounded by the players’ stamping feet or by beating with sticks; the edges of the slit are usually of different thicknesses, so as to produce different pitches. Unlike membrane drums, which are

  • slit moss (common name of several mosses)

    Slit moss, any of a number of plants in the granite moss (q.v.)

  • slit shell (gastropod family)

    gastropod: Classification: Zeugobranchia (Pleurotomariacea) Slit shells (Pleurotomariidae) in deep ocean waters; abalones (Haliotidae) in shallow waters along rocky shores of western North America, Japan, Australia, and South Africa; keyhole limpets (Fissurellidae) in intertidal rocky areas. Superfamily Patellacea (Docoglossa) Conical-shelled limpets, without slits or holes,

  • slit-faced bat (mammal)

    Slit-faced bat, (family Nycteridae), any of 16 species of tropical bats, all belonging to the genus Nycteris, which constitutes the family Nycteridae, found in Africa and in the Malaysian and Indonesian regions. Slit-faced bats have a longitudinal hollow on their faces and a nose leaf (fleshy

  • Sliven (Bulgaria)

    Sliven, town, east-central Bulgaria. It lies in the southern foothills of the eastern Balkan Mountains at the confluence of the Novoselska and Asenovska rivers. It dates as a town from 1153, but there are significant Roman remains in the area. Destroyed by the Turks, it was rebuilt during their

  • sliver (fibre)

    Sliver, in yarn production, loose, soft, untwisted ropelike strand of textile fibre having a roughly uniform thickness. It is produced by the carding process, which separates raw fibres to prepare them for spinning. The carded fibres may be combed to remove any short fibres and make the remaining

  • slivering (industrial process)

    rope: Manufacturing process.: …are combed or carded, then slivered and spun into yarn by the processes used in the textile industry. Strands, also known as readies, are formed by twisting yarns, or small cords, together. The stranding machines, called formers or bunchers, vary in size and form depending on ability to accommodate continuous…

  • slivovitz (distilled liquor)

    brandy: …fruit pits during mashing, include slivovitz, a golden-brown plum brandy produced in various Balkan countries; barack palinka, from Hungary, the best known of apricot brandies; Kirschwasser, or kirsch, produced mainly in Alsace, Germany, and Switzerland, distilled from cherries; and the French plum wines, from Alsace and Lorraine, including Mirabelle, made…

  • ?ljivovica (distilled liquor)

    brandy: …fruit pits during mashing, include slivovitz, a golden-brown plum brandy produced in various Balkan countries; barack palinka, from Hungary, the best known of apricot brandies; Kirschwasser, or kirsch, produced mainly in Alsace, Germany, and Switzerland, distilled from cherries; and the French plum wines, from Alsace and Lorraine, including Mirabelle, made…

  • Sloan v. Lemon (law case)

    Sloan v. Lemon, legal case in which the U.S. Supreme Court on June 25, 1973, struck down (6–3) a Pennsylvania state law that had provided partial reimbursement to parents for the cost of their children’s tuition at private schools, including parochial schools. Applying a test devised by the Supreme

  • Sloan, Alfred P., Jr. (American industrialist)

    Alfred P. Sloan, Jr., American corporate executive and philanthropist who headed General Motors (GM) as president and chairman for more than a quarter of a century. The son of a coffee and tea importer, he was brought up in Brooklyn, N.Y. After earning a degree in electrical engineering from the

  • Sloan, Alfred Pritchard, Jr. (American industrialist)

    Alfred P. Sloan, Jr., American corporate executive and philanthropist who headed General Motors (GM) as president and chairman for more than a quarter of a century. The son of a coffee and tea importer, he was brought up in Brooklyn, N.Y. After earning a degree in electrical engineering from the

  • Sloan, David H. (American physicist)

    particle accelerator: History: Lawrence and his assistant David H. Sloan, at the University of California, Berkeley, employed high-frequency fields to accelerate mercury ions to more than 1.2 MeV. This work augmented Wider?e’s achievement in accelerating heavy ions, but the ion beams were not useful in nuclear research.

  • Sloan, Gerald Eugene (American basketball player and coach)

    Jerry Sloan, American professional basketball player and coach who was one of the best defensive guards and hard-nosed rebounders in the history of the National Basketball Association (NBA) as a Chicago Bull and who became the first coach to win 1,000 games with a single team, the Utah Jazz. After

  • Sloan, James Forman (American jockey)

    Tod Sloan, American jockey, who popularized the “monkey crouch” riding style, which at first was derided but later was adopted by most jockeys. He was a colourful, self-assertive personage, but he squandered his considerable earnings and died in poverty. Sloan’s nickname of “Tod” (he inaccurately

  • Sloan, Jerry (American basketball player and coach)

    Jerry Sloan, American professional basketball player and coach who was one of the best defensive guards and hard-nosed rebounders in the history of the National Basketball Association (NBA) as a Chicago Bull and who became the first coach to win 1,000 games with a single team, the Utah Jazz. After

  • Sloan, John French (American artist)

    John French Sloan, American painter, etcher and lithographer, cartoonist, and illustrator known for the vitality of his depictions of everyday life in New York City in the early 20th century. Sloan was a commercial newspaper artist in Philadelphia, where he studied with Robert Henri. He followed

  • Sloan, Tod (American jockey)

    Tod Sloan, American jockey, who popularized the “monkey crouch” riding style, which at first was derided but later was adopted by most jockeys. He was a colourful, self-assertive personage, but he squandered his considerable earnings and died in poverty. Sloan’s nickname of “Tod” (he inaccurately

  • Sloan-Kettering Institute for Cancer Research (institution, New York City, New York, United States)

    Charles F. Kettering: …in the establishment of the Sloan-Kettering Institute for Cancer Research at the Memorial Cancer Center, New York City, and the C.F. Kettering Foundation for the Study of Chlorophyll and Photosynthesis.

  • Sloane ranger (fashion style)

    dress: Post-World War II: …by wealthy, conservative young adults—“Sloanie” or “Sloane ranger” attire in England (named for the fashionable Sloane Square district of London and initially epitomized by Lady Diana Spencer, the future Diana, princess of Wales); and the “preppie” look in the United States, named for the apparel preferred by students at…

  • Sloane, Everett (American actor)

    Citizen Kane: Cast:

  • Sloane, Sir Hans, Baronet (British physician)

    Sir Hans Sloane, Baronet, British physician and naturalist whose collection of books, manuscripts, and curiosities formed the basis for the British Museum in London. As a child Sloane possessed a strong curiosity of nature, and he developed a particular interest in plants. After studying medicine

  • Sloanie (fashion style)

    dress: Post-World War II: …by wealthy, conservative young adults—“Sloanie” or “Sloane ranger” attire in England (named for the fashionable Sloane Square district of London and initially epitomized by Lady Diana Spencer, the future Diana, princess of Wales); and the “preppie” look in the United States, named for the apparel preferred by students at…

  • Slob-dpon (Buddhist mystic)

    Padmasambhava, legendary Indian Buddhist mystic who introduced Tantric Buddhism to Tibet and who is credited with establishing the first Buddhist monastery there. According to tradition, he was a native of Udyāna (now Swat, Pak.), an area famed for its magicians. Padmasambhava was a Tantrist and a

  • sloboda (Ukrainian settlement)

    Ukraine: The autonomous hetman state and Sloboda Ukraine: …established free, nonserf settlements called slobodas that gave the area the name of Sloboda Ukraine. Kharkiv developed into the region’s main centre. Like the Hetmanate, Sloboda Ukraine enjoyed extensive internal autonomy, though under officials appointed by the Russian imperial government. The autonomy of Sloboda Ukraine was abolished under Catherine in…

  • Sloboda Ukraine (historical region, Ukraine)

    Ukraine: The autonomous hetman state and Sloboda Ukraine: …the area the name of Sloboda Ukraine. Kharkiv developed into the region’s main centre. Like the Hetmanate, Sloboda Ukraine enjoyed extensive internal autonomy, though under officials appointed by the Russian imperial government. The autonomy of Sloboda Ukraine was abolished under Catherine in 1765.

  • Slobodkin, Lawrence B. (American ecologist)

    Lawrence B. Slobodkin, American ecologist (born June 22, 1928, Bronx, N.Y.—died Sept. 11, 2009, Old Field, N.Y.), was among the first to combine mathematical modeling with observation in the study of terrestrial ecosystems and made important discoveries in the areas of population dynamics and

  • Slobozia (Romania)

    Slobozia, town, capital of Ialomi?a jude? (county), southeastern Romania. It lies along the Ialomi?a River in the middle of the B?r?gan Plain. The town was built on what remained of the Roman settlement of Netindava. It is a collecting and marketing centre for a rich agricultural region in which

  • Slocombe, Douglas (British cinematographer)

    Douglas Slocombe, British cinematographer (born Feb. 10, 1913, London, Eng.—died Feb. 22, 2016, London), brought a distinctive high-contrast look to some 80 movies—both black-and-white and colour—over a career that spanned nearly 50 years (1940–89). He was closely associated with Ealing Studios,

  • Slocum Hollow (Pennsylvania, United States)

    Scranton, city, seat (1878) of Lackawanna county, northeastern Pennsylvania, U.S., in the Lackawanna River valley, on the western fringes of the Pocono Mountains. It is the centre of an urbanized industrial complex that includes Carbondale and Wilkes-Barre. The area was inhabited by

  • Slocum, John (American religious leader)

    Indian Shaker Church: In 1881 near Olympia, Washington, John Slocum, a Squaxon logger and a baptized Roman Catholic, reported that he had visited heaven while in a coma and was commissioned to preach a new way of life. The following year his wife, Mary, experienced a shaking paroxysm, which was interpreted as the…

  • Slocum, Joshua (Canadian seaman)

    Joshua Slocum, Canadian seaman and adventurer who was the first man in recorded history to sail around the world singlehandedly. Slocum joined the crew of a merchant vessel at 16 and from that time on spent most of his life at sea. In 1889 he wrote Voyage of the Liberdade about one of his passages

  • Slocum, Margaret Olivia (American philanthropist)

    Margaret Olivia Slocum Sage, American philanthropist whose exceptional generosity in her lifetime, especially to numerous educational and social causes, is continued by the Russell Sage Foundation, which she established. Margaret Slocum graduated from the Troy (New York) Female Seminary (now the

  • Slocum, Paul (American ship owner, merchant, and Pan-Africanist)

    Paul Cuffe, American shipowner, merchant, and Pan-Africanist who was an influential figure in the 19th-century movement to resettle free black Americans to Africa. He was one of 10 children born to Kofi (or Cuffe) Slocum, a freed slave, and Ruth Moses, a Native American of the Wampanoag tribe.

  • sloe (shrub)

    Blackthorn, (Prunus spinosa), spiny shrub of the rose family (Rosaceae), native to Europe but cultivated in other regions. Blackthorn usually grows less than 3.6 metres (12 feet) tall and has numerous small deciduous leaves. Its dense growth makes it suitable for hedges. The white flowers, about 2

  • sloe gin (alcoholic beverage)

    gin: Sloe gin is not a true gin but a sweet liqueur, flavoured with sloe berries, the small, sour fruit of the blackthorn.

  • slogan (advertising)

    public opinion: Opinion leaders: …by inventing symbols or coining slogans: in the words of U.S. Pres. Woodrow Wilson, the Allies in World War I were fighting “a war to end all wars,” while aiming “to make the world safe for democracy”; post-World War II relations with the Soviet Union were summed up in the…

  • Sloika (physics)

    Vitaly Ginzburg: Known as Sloika (“Layer Cake”), the design was refined by Ginzburg in 1949 through the substitution of lithium-6 deuteride for the liquid deuterium. When bombarded with neutrons, lithium-6 breeds tritium, which can fuse with deuterium to release more energy. Ginzburg and Sakharov’s design was tested on August…

  • ?loka (Sanskrit poetics)

    Sloka, (Sanskrit: “sound,” “song of praise,” “praise,” or “stanza”) chief verse form of the Sanskrit epics. A fluid metre that lends itself well to improvisation, the sloka consists of two verse lines (a distich) of 16 syllables each or four half lines (hemistichs) of 8 syllables

  • sloka (Sanskrit poetics)

    Sloka, (Sanskrit: “sound,” “song of praise,” “praise,” or “stanza”) chief verse form of the Sanskrit epics. A fluid metre that lends itself well to improvisation, the sloka consists of two verse lines (a distich) of 16 syllables each or four half lines (hemistichs) of 8 syllables

  • Slonim (Belarus)

    Slonim, city, western Belarus. The city arose in the latter part of the 10th century as a fortified point and later developed into a market centre. After becoming a railway junction, it expanded its industrial base, and it now has varied food, consumer, and engineering industries, as well as a

  • S?onimski, Antoni (Polish writer and translator)

    Antoni S?onimski, Polish poet, translator, and newspaper columnist known for his devotion to pacifism and social justice. S?onimski studied at the Academy of Fine Arts in Warsaw. He lived for a time in Munich, Germany, and Paris and published his first poetry in 1913. He was a member of the

  • Slonimsky, Nicolas (American musicologist, conductor, and composer)

    Nicolas Slonimsky, Russian-born U.S. musicologist, conductor, and composer. He left the Soviet Union after studies at the St. Petersburg Conservatory and settled in the U.S. in 1923. In the 1930s he conducted premieres of works by Charles Ives, Edgard Varèse, and others. In Music Since 1900 (1937)

  • sloop (ship)

    Sloop, single-masted sailing vessel with fore-and-aft rigging, including mainsail, jib, and sometimes one or more headsails. A sloop of war was a small sloop-rigged warship, mounting about 20 guns. In modern usage, the sloop is practically synonymous with the

  • sloop of war (warship)

    Corvette, small, fast naval vessel ranking in size below a frigate. In the 18th and 19th centuries, corvettes were three-masted ships with square rigging similar to that of frigates and ships of the line, but they carried only about 20 guns on the top deck. Frequently serving as dispatchers among

  • slope (mathematics)

    Slope, Numerical measure of a line’s inclination relative to the horizontal. In analytic geometry, the slope of any line, ray, or line segment is the ratio of the vertical to the horizontal distance between any two points on it (“slope equals rise over run”). In differential calculus, the slope of

  • slope (mining)

    mining: Pit geometry: …a pit have a certain slope determined by the strength of the rock mass and other factors. The stability of these walls, and even of individual benches and groups of benches, is very important—particularly as the pit gets deeper. Increasing the pit slope angle by only a few degrees can…

  • slope (geology)

    beach: …is a steeper, frontal beach slope or face, and beneath it a low-tide terrace may be developed. If the tides are high enough (more than 2 m [6.6 feet]), the frontal slope may be more than 1 km (0.6 mile) in width in regions with abundant sand and a shallow…

  • slope angle (slope)

    canals and inland waterways: Modern waterway engineering: …waterways are confined to moderate gradients; and where these change direction, the summit pounds (ponds) require an adequate supply of water, while valley pounds need facilities for disposal of surplus.

  • slope soaring (sports)

    gliding: Slope soaring occurs when moving air is forced up by a ridge. By following the ridge, the sailplane can glide for great distances. In wave soaring, the glider flies along vertical waves of wind that form on the lee side of mountain ranges (the side…

  • slope wash (geology)

    Sheet erosion, detachment of soil particles by raindrop impact and their removal downslope by water flowing overland as a sheet instead of in definite channels or rills. A more or less uniform layer of fine particles is removed from the entire surface of an area, sometimes resulting in an

  • Slopes of Parnassus, The (work by Vecchi)

    Orazio Vecchi: …best known for his madrigal-comedy L’Amfiparnaso and other entertainment music.

  • slopestyle (sports)

    snowboarding: Slopestyle: In the slopestyle event, snowboarders take a run through a course consisting of three to four large jumps made of snow and three to four jib-style obstacles of the course builder’s design, showcasing a rider’s creativity and consistency. The jumps can seem huge, but for the most…

  • SLORC (Myanmar government)

    Myanmar: Administrative framework: …1997 and 2011, as the State Peace and Development Council (SPDC).

  • slot (sports)

    ice hockey: Strategies: …spot known as the "slot." In the slot he is in position to shoot if he gets the puck. The defensemen on the attacking team take up positions on the blue line to prevent the defending team from getting a breakaway. Often the puck is passed to the defensemen,…

  • slot machine (gambling device)

    Slot machine, gambling device operated by dropping one or more coins or tokens into a slot and pulling a handle or pushing a button to activate one to three or more reels marked into horizontal segments by varying symbols. The machine pays off by dropping into a cup or trough from two to all the

  • sloth (mammal)

    Sloth, (suborder Phyllophaga), tree-dwelling mammal noted for its slowness of movement. All five living species are limited to the lowland tropical forests of South and Central America, where they can be found high in the forest canopy sunning, resting, or feeding on leaves. Although two-toed

  • sloth bear (mammal)

    Sloth bear, (Melursus ursinus), forest-dwelling member of the family Ursidae that inhabits tropical or subtropical regions of India and Sri Lanka. Named for its slow-moving habits, the sloth bear has poor senses of sight and hearing but has a good sense of smell. Various adaptations equip this

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