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  • gymnastics, modern rhythmic (sport)

    Rhythmic gymnastics, the performance of systematic physical exercise with the aid of such hand apparatuses as ropes, hoops, balls, clubs, and ribbons. It is closely related to women’s artistic gymnastics—a sport performed on the vaulting horse, uneven parallel bars, balance beam, and floor—and,

  • Gymnastik für die Jugend (work by Guts Muths)

    gymnastics: History: …Gymnastik für die Jugend (1793; Gymnastics for Youth), Guts Muths envisioned two main divisions of gymnastics: natural gymnastics and artificial gymnastics. These two divisions may be thought of as utilitarian and nonutilitarian gymnastics. The former disciplines emphasize the health of the body, similar to the exercises developed in Sweden and…

  • gymnemic acid (drug)

    human sensory reception: Physiological basis of taste: …unpleasant medications are blocked by gymnemic acid, a drug obtained from Gymnema bushes native to India. Among some laboratory animals, gymnemic acid blocks only the nerve response to sugar, even if the fibre mediates other taste qualities. Such a multiresponsive fibre still can transmit taste impulses (e.g., for salt or…

  • Gymnocalycium (plant)

    Chin cactus, (genus Gymnocalycium), genus of about 50 species of cacti (family Cactaceae), native to South America. Chin cacti are found in warm regions of Argentina, Paraguay, Uruguay, Bolivia, and Brazil. Many natural and cultivated varieties are available and are common ornamentals. The small

  • Gymnocalycium mihanovichii (plant, Gymnocalycium species)

    chin cactus: …cultivated species, commonly known as moon cactus (Gymnocalycium mihanovichii), is a glowing red mutant that must be grown grafted onto a normal cactus because it lacks chlorophyll and cannot synthesize its own food. Varieties of other colours also have been developed and are seen in the florist trade.

  • Gymnocladus dioicus (plant)

    Kentucky coffeetree, (Gymnocladus dioicus), deciduous tree of the pea family (Fabaceae), native to North America from New York and southern Ontario to Oklahoma. In colonial times the roasted seeds were used as a coffee substitute, and the plant is sometimes cultivated as an ornamental. The strong

  • Gymnocorymbus ternetzi (fish)

    tetra: The black tetra (Gymnocorymbus ternetzi), also called blackamoor, or petticoat fish, is a deep-bodied fish that is 4–7.5 cm (1.5–3 inches) long. When small, it is marked with black on its hind parts and dorsal and anal fins; the black fades to gray as the fish…

  • Gymnodinium (dinoflagellate genus)

    Gymnodinium, genus of marine or freshwater dinoflagellate algae (family Gymnodiniaceae). Like all dinoflagellates, members of the genus feature two flagella and have both plantlike and animal-like characteristics. Some may be bioluminescent or form periodic water blooms that may colour water yellow

  • Gymnodinium breve (dinoflagellate)

    algae: Toxicity: …caused by toxins produced in Gymnodinium breve, is notorious for fish kills and shellfish poisoning along the coast of Florida in the United States. When the red tide blooms are blown to shore, wind-sprayed toxic cells can cause health problems for humans and other animals that breathe the air.

  • Gymnodontes (fish suborder)

    tetraodontiform: Annotated classification: Suborder Tetraodontoidei (Gymnodontes) 4 tooth plates, 2 in each jaw; skin bearing small erectile spines. Family Triodontidae (threetooth puffers) Most primitive member of the superfamily, the only species to retain even the pelvic bone of the pelvic fin apparatus (completely lost by all other members of…

  • Gymnogyps californianus (bird)

    condor: Adult California condors are mostly black, with bold white wing linings, and bare red-to-orange head, neck, and crop. Young birds have dark heads that gradually become red as they near adulthood at about six years of age. They forage in open country and feed exclusively on…

  • Gymnolaemata (class of bryozoans)

    moss animal: Annotated classification: Class Gymnolaemata Zooids cylindrical or squat, with a circular lophophore; no epistome; body wall sometimes calcified; nonmuscular; eversion of lophophore dependent on deformation of body wall by extrinsic muscles; zooids separated by septa or duplex walls; pores in walls plugged with tissue; new zooids produced behind…

  • gymnolaemate (class of bryozoans)

    moss animal: Annotated classification: Class Gymnolaemata Zooids cylindrical or squat, with a circular lophophore; no epistome; body wall sometimes calcified; nonmuscular; eversion of lophophore dependent on deformation of body wall by extrinsic muscles; zooids separated by septa or duplex walls; pores in walls plugged with tissue; new zooids produced behind…

  • gymnophion (amphibian)

    Gymnophiona, one of the three major extant orders of the class Amphibia. Its members are known as caecilians, a name derived from the Latin word caecus, meaning “sightless” or “blind.” The majority of this group of limbless, wormlike amphibians live underground in humid tropical regions throughout

  • Gymnophiona (amphibian)

    Gymnophiona, one of the three major extant orders of the class Amphibia. Its members are known as caecilians, a name derived from the Latin word caecus, meaning “sightless” or “blind.” The majority of this group of limbless, wormlike amphibians live underground in humid tropical regions throughout

  • Gymnophthalmidae (reptile family)

    lizard: Annotated classification: Family Gymnophthalmidae (spectacled lizards or microteiids) Small lizards with relatively small limbs, reduced limbs, or no limbs. Restricted to the Neotropics. 38 genera with more than 160 species. Family Lacertidae (lacertids and wall lizards) Osteoderms absent, supratemporal

  • Gymnorhina (bird)

    Bell-magpie, Australasian songbird belonging to the family Cracticidae (order Passeriformes), named for its loud, metallic voice and magpie-like black-and-white plumage. Most authorities consider the bell-magpies to represent a single widespread species, Gymnorhina tibicen; some recognize three

  • Gymnosomata (gastropod order)

    gastropod: Classification: Order Gymnosomata Shell absent; no mantle cavity; complicated feeding mechanisms; pelagic carnivores; 7 families. Order Nudibranchia Sea slugs without shell, mantle cavity, osphradium, or internal gill; many feed on sessile animals; few swimmers (family Tethyidae); highly colourful, often conspicuous.

  • gymnosperm (plant)

    Gymnosperm, any vascular plant that reproduces by means of an exposed seed, or ovule—unlike angiosperms, or flowering plants, whose seeds are enclosed by mature ovaries, or fruits. The seeds of many gymnosperms (literally “naked seeds”) are borne in cones and are not visible until maturity.

  • Gymnospermae (plant)

    Gymnosperm, any vascular plant that reproduces by means of an exposed seed, or ovule—unlike angiosperms, or flowering plants, whose seeds are enclosed by mature ovaries, or fruits. The seeds of many gymnosperms (literally “naked seeds”) are borne in cones and are not visible until maturity.

  • Gymnostoma (plant genus)

    Casuarinaceae: …two genera (Casuarina, 30 species; Gymnostoma, 20 species) of trees and shrubs, many of which have a distinctly pinelike aspect when seen from afar. They are naturally distributed in tropical eastern Africa, the Mascarene Islands, Southeast Asia, Malaysia, Australia, and Polynesia. Some, especially the beefwood (C. equisetifolia, also called she-oak,…

  • Gymnostomatida (protozoan order)

    Gymnostome, any ciliated protozoan of the large holotrichous order Gymnostomatida; included are oval to elongated protozoans with simple, uniformly distributed hairlike processes (cilia) and a mouth opening (cytostome) on the body surface rather than in a groove or pit as in other ciliates.

  • gymnostome (protozoan order)

    Gymnostome, any ciliated protozoan of the large holotrichous order Gymnostomatida; included are oval to elongated protozoans with simple, uniformly distributed hairlike processes (cilia) and a mouth opening (cytostome) on the body surface rather than in a groove or pit as in other ciliates.

  • Gymnote (submarine)

    submarine: Toward diesel-electric power: …France, Gustave Zédé launched the Gymnote in 1888; it, too, was propelled by an electric motor and was extremely maneuverable but tended to go out of control when it dived.

  • gymnotid eel (fish)

    ostariophysan: Annotated classification: Family Gymnotidae (nakedback knifefishes) Carnivorous group that includes electric eels. Body eel-like and scaleless with powerful electric organs. Size to 2.75 metres (about 9 feet), weight to 22 kg (48 pounds). Mexico, Central and South America. 2 genera, 33 species. Family Rhamphichthyidae Body greatly compressed, scaled. Elephant-like…

  • Gymnotidae (fish)

    ostariophysan: Annotated classification: Family Gymnotidae (nakedback knifefishes) Carnivorous group that includes electric eels. Body eel-like and scaleless with powerful electric organs. Size to 2.75 metres (about 9 feet), weight to 22 kg (48 pounds). Mexico, Central and South America. 2 genera, 33 species. Family Rhamphichthyidae Body greatly compressed, scaled. Elephant-like…

  • Gymnotiformes (fish order)

    fish: Annotated classification: Order Gymnotiformes (knifefishes, gymnotid and electric eels) Body elongated; anal fin very long; electric organs present, some extraordinarily powerful. Size to 2.2 metres (about 7 feet), weight to 22 kg (48 pounds). About 5 families, 30 genera, and about 134 species. Fossils discovered from Upper Miocene.…

  • Gymnotoidei (fish, suborder Gymnotoidei)

    Knifefish, any of certain New World fishes of the suborder Gymnotoidei, order Gymnotiformes. Knifefishes comprise, at most, about 50 species of Central and South American fishes found in quiet lakes and lagoons. They are placed in three families: Gymnotidae (often called gymnotid “eels”);

  • gymnure (mammal)

    Gymnure, (subfamily Galericinae), any of eight species of hedgehoglike mammals having a long muzzle with a protruding and mobile snout. Found in Southeast Asia and the Philippines, gymnures have a slim body, a short tail, and long slender limbs and feet. The eyes are large, as are the nearly

  • Gymnuridae (fish)

    Butterfly ray, any of several stingray (q.v.) species in the family

  • Gympie (Queensland, Australia)

    Gympie, city, southeastern Queensland, Australia, lying on Gympie Creek and the Mary River. It was first known as Nashville, after James Nash, who discovered gold there in 1867; its present name comes from gimpi-gimpi, the Aboriginal word for the stinging tree. Proclaimed a town in 1890, it was

  • Gymreig, Yr Academi (Welsh organization)

    Celtic literature: The second revival: …others, the establishment of the Welsh Academy (Yr Academi Gymreig) in 1959 and the publication of its review Taliesin made an outstanding contribution.

  • gynaecology (medicine)

    obstetrics and gynecology: gynecology, medical/surgical specialty concerned with the care of women from pregnancy until after delivery and with the diagnosis and treatment of disorders of the female reproductive tract.

  • gynandromorph (biology)

    sex: Abnormal chromosome effects: …are known as gynandromorphs, or sexual mosaics, and result from aberration in the distribution of the X chromosomes among the first cells to be formed during the early development of the embryo.

  • gynecological examination (medicine)

    Gynecological examination, procedures aimed at assessing the health of a woman’s reproductive system. The general examination usually makes use of a speculum for a view of the vagina and cervix. More specialized procedures include the Pap smear for the detection of cancer of the cervix. In the

  • gynecology (medicine)

    obstetrics and gynecology: gynecology, medical/surgical specialty concerned with the care of women from pregnancy until after delivery and with the diagnosis and treatment of disorders of the female reproductive tract.

  • gynecomastia (pathology)

    Gynecomastia, enlargement of the breasts in the male, usually because of hormone imbalance. The growth and development of male breasts are like those of the female until puberty. The male reproductive organs (testes) then begin secreting male hormones (androgens), which normally suppress further

  • Gyngell, Bruce (British businessman)

    Bruce Gyngell, Australian-born television executive (born July 8, 1929, Melbourne, Australia—died Sept. 7, 2000, London, Eng.), had a 50-year career that took him from being the first face seen on Australian TV to being managing director of three British ITV franchises, one of which—the breakfast c

  • gynocriticism (literary criticism)

    Elaine Showalter: …and teacher and founder of gynocritics, a school of feminist criticism concerned with “woman as writer…with the history, themes, genres, and structures of literature by women.”

  • gynocritics (literary criticism)

    Elaine Showalter: …and teacher and founder of gynocritics, a school of feminist criticism concerned with “woman as writer…with the history, themes, genres, and structures of literature by women.”

  • gynoecium (plant anatomy)

    flower: Form and types: …the centre is (4) the gynoecium, consisting of the pistils.

  • gynogenesis (biology)

    animal reproductive system: Parthenogenesis: …type of parthenogenesis known as gynogenesis. In this type of reproduction, the sperm produced by males do not unite with the haploid female egg but merely activate it to begin development. The result is haploid females.

  • gyo (flower arrangement)

    Ikenobō: …are divided into shin (formal), gyō (semi-formal), and so (informal).

  • Gyōda (Japan)

    Gyōda, city, Saitama ken (prefecture), Honshu, Japan. It lies on the alluvial plain between the Tone and the Ara rivers, just east-southeast of Kumagaya. The site was settled in ancient times. Oshi Castle was constructed there in 1490. During the Edo (Tokugawa) period (1603–1867), the manufacture

  • Gyöngyös (Hungary)

    Heves: …valley—and the industrial centres of Gyöngyös and Hatvan.

  • Gyöngyösi, István (Hungarian poet)

    Hungarian literature: Effects of the Counter-Reformation: Another poet of this time, István Gyöngyösi, composed long narrative poems and also many epithalamia, or nuptial poems. He was inventive and handled rhyme with ease, and his work was read widely during the 17th and 18th centuries.

  • Győr (Hungary)

    Győr, historic city and seat of Győr-Moson-Sopron megye (county), northwestern Hungary. It is located on the Moson arm of the Danube, the meandering southern arm in Hungary proper, where the south bank tributaries, Rába and Rábca, converge. The Marcal River joins the Rába just south of Győr. The

  • Győr-Moson-Sopron (county, Hungary)

    Győr-Moson-Sopron, megye (county), northwestern Hungary. It is bordered by Austria and Slovakia to the north and the counties of Komárom-Esztergom to the east and Vas and Veszprém to the south. Győr is the county seat. Principal towns also include Sopron, Mosonmagyaróvár, and Kapuvár. The landscape

  • György, Frater (Hungarian cardinal)

    György Martinuzzi, Hungarian statesman and later cardinal who worked to restore and maintain the national unity of Hungary. Born of a Croatian father and a mother of the patrician Venetian family of Martinuzzi, György became a Paulist friar at the age of 28 after a brief military career. A skilled

  • GYPA (biochemistry)

    MNSs blood group system: …polymorphic (variable) genes, known as GYPA and GYPB (glycophorin A and B, respectively). The system consists of two pairs of codominant alleles, designated M and N (identified in 1927) and S and s (identified 1947 and 1951, respectively). The alleles M and N are usually distributed in populations in approximately…

  • Gypaetus barbatus (bird)

    Lammergeier, (German: “lamb vulture”) (Gypaetus barbatus), big eaglelike vulture of the Old World (family Accipitridae), frequently over 1 metre (40 inches) long, with a wingspread of nearly 3 metres (10 feet). Brown above and tawny below, the lammergeier has spots on the breast, black and white

  • GYPB (biochemistry)

    MNSs blood group system: known as GYPA and GYPB (glycophorin A and B, respectively). The system consists of two pairs of codominant alleles, designated M and N (identified in 1927) and S and s (identified 1947 and 1951, respectively). The alleles M and N are usually distributed in populations in approximately equal frequencies.…

  • gypcrete (geology)

    Gypcrete, gypsum-cemented duricrust, an indurated, or hardened, layer formed on or in soil. It generally occurs in a hot, arid or semiarid climate in a basin that has internal drainage. It usually is composed of about 95 percent gypsum (a hydrated calcium sulfate mineral) and is initially d

  • gypcrust (geology)

    Gypcrete, gypsum-cemented duricrust, an indurated, or hardened, layer formed on or in soil. It generally occurs in a hot, arid or semiarid climate in a basin that has internal drainage. It usually is composed of about 95 percent gypsum (a hydrated calcium sulfate mineral) and is initially d

  • Gyphohierax angolensis (bird)

    vulture: Old World vultures: The palm-nut vulture (Gypohierax angolensis) lives in western and central Africa. It is about 50 cm (20 inches) long and has a bare orange face and yellow beak. It is unusual in being primarily vegetarian, although it sometimes takes crustaceans and dead fish.

  • Gyps bengalensis (bird)

    vulture: Old World vultures: …Asia three Gyps species, the Asian white-backed vulture (G. bengalensis), the long-billed vulture (G. indicus), and the slender-billed vulture (G. tenuirostris), have been brought close to extinction by feeding on the carcasses of dead cattle that had been given pain-killing drugs; the pain killers cause kidney failure in the vultures.

  • Gyps fulvus (bird)

    vulture: Old World vultures: The common griffon (Gyps fulvus), or Eurasian griffon, is an Old World vulture of northwestern Africa, the Spanish highlands, southern Russia, and the Balkans. Gray above and reddish brown with white streaking below, it is about a metre long. The genus Gyps contains seven similar species,…

  • Gyps indicus (bird)

    vulture: Old World vultures: bengalensis), the long-billed vulture (G. indicus), and the slender-billed vulture (G. tenuirostris), have been brought close to extinction by feeding on the carcasses of dead cattle that had been given pain-killing drugs; the pain killers cause kidney failure in the vultures.

  • Gyps tenuirostris (bird)

    vulture: Old World vultures: indicus), and the slender-billed vulture (G. tenuirostris), have been brought close to extinction by feeding on the carcasses of dead cattle that had been given pain-killing drugs; the pain killers cause kidney failure in the vultures.

  • Gypsies, The (poem by Pushkin)

    Aleksandr Pushkin: At Mikhaylovskoye: …1824 he published Tsygany (The Gypsies), begun earlier as part of the “southern cycle.” At Mikhaylovskoye, too, he wrote the provincial chapters of Yevgeny Onegin; the poem Graf Nulin (1827; “Count Nulin”), based on the life of the rural gentry; and, finally, one of his major works, the historical…

  • Gypsisol (FAO soil group)

    Gypsisol, one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO). Gypsisols are characterized by a subsurface layer of gypsum (a hydrated calcium sulfate) accumulated by the precipitation of calcium and sulfate from downward percolating waters in the

  • gypsum (mineral)

    Gypsum, common sulfate mineral of great commercial importance, composed of hydrated calcium sulfate (CaSO4·2H2O). In well-developed crystals the mineral commonly has been called selenite. The fibrous massive variety has a silky lustre and is called satin spar; it is translucent and opalescent and

  • gypsum drywall (building material)

    drywall: …common drywall types is the gypsum panel. Gypsum, a natural mineral in crystalline form, is a hydrous sulfate of calcium. Gypsum board contains a gypsum rock core sandwiched between two layers of special paper. In fire-resistant panels, required for many types of construction, glass fibres are mixed with the gypsum…

  • gypsum flower (geology)

    cave: Depositional materials and features: …of fibrous crystals known as gypsum flowers. Because of their higher solubility, sulfate minerals either do not occur or are destroyed in damp or wet caves.

  • gypsum lath (building material)

    lath: …the most common laths is gypsum lath. It is manufactured with an air-entrained gypsum core sandwiched between two layers of fibrous absorbent paper. Sheets with reflective foil backing provide insulation and act as a vapour barrier.

  • gypsum plaster (building material)

    Gypsum plaster, white cementing material made by partial or complete dehydration of the mineral gypsum, commonly with special retarders or hardeners added. Applied in a plastic state (with water), it sets and hardens by chemical recombination of the gypsum with water. For especially hard finish

  • Gypsy (film by LeRoy [1962])

    Mervyn LeRoy: Return to Warner Brothers: Mister Roberts, The Bad Seed, and Gypsy: Russell was better served in Gypsy (1962) as Rose Hovick, the frightening stage mother of Gypsy Rose Lee (Natalie Wood) and Baby June (Morgan Britanny).

  • Gypsy (people)

    Roma, an ethnic group of traditionally itinerant people who originated in northern India but live in modern times worldwide, principally in Europe. Most Roma speak some form of Romany, a language closely related to the modern Indo-European languages of northern India, as well as the major language

  • Gypsy (music by Sondheim, Styne, and Laurents)

    Patti LuPone: …the obsessive Momma Rose in Gypsy (2007), for which she won another Tony for best actress in a musical.

  • Gypsy Ballads, The (work by García Lorca)

    The Gypsy Ballads, verse collection by Federico García Lorca, written between 1924 and 1927 and first published in Spanish in 1928 as Romancero gitano. The collection comprises 18 lyrical poems, 15 of which combine startlingly modern poetic imagery with traditional literary forms; the three

  • Gypsy Chorus (work by Verdi)

    Il trovatore: Background and context: Act II features the “Anvil Chorus” (or “Gypsy Chorus”), which has become one of the best-known passages in the operatic repertoire.

  • Gypsy languages

    Romany languages, group of 60 or more highly divergent dialects that are genetically related to the Indo-Aryan (Indic) languages. The Romany languages are spoken by more than three million individuals worldwide, and the more remotely related Domari group of dialects (whose speakers seem to have

  • Gypsy Melodies, Op. 55 (work by Dvořák)

    Gypsy Melodies, Op. 55, song cycle by Bohemian composer Antonín Dvořák, with text by Czech poet Adolf Heyduk (1835–1923), celebrating the freedom of Roma (Gypsy) life. The song cycle was written for Gustav Walter, a tenor at Vienna’s Hofoper (Court Opera; precursor to the Staatsoper). Each of the

  • gypsy moth (insect)

    Gypsy moth, (Lymantria dispar), lepidopteran that is a serious pest of both deciduous and evergreen trees. The European strain was accidentally introduced into eastern North America about 1869, and by 1889 it had become a serious pest of deciduous forests and fruit trees. By the end of the 20th

  • Gypsy Moths, The (film by Frankenheimer [1969])

    John Frankenheimer: Films of the 1960s: Far better was The Gypsy Moths (1969), a drama about daredevil skydivers, with Lancaster, Gene Hackman, and Deborah Kerr.

  • Gypsy, La (ballet)

    Fanny Elssler: ” In La Gypsy (1839), made famous by her performance of the cracovienne, a Polish folk dance, and in La Tarentule (1839), she revealed extraordinary pantomimic ability. Her sensational success in Le Diable boiteux (1836), in which she introduced the Spanish cachucha, challenged Taglioni’s supremacy. To unseat…

  • gyration (physics)

    geomagnetic field: The ring current: These types include gyration about the main field, “bounce” along field lines, and azimuthal drift in rings around Earth.

  • gyration, radius of (physics)

    mechanics: Rotation about a moving axis: … is a distance called the radius of gyration. Comparison to equation (79) shows that k is a measure of how far from the centre of mass the mass of the body is concentrated. Using equations (87) and (88) in equation (86), one finds that

  • Gyratrix hermaphroditus (flatworm)

    flatworm: Distribution and abundance: …ecological conditions is the turbellarian Gyratrix hermaphroditus, which occurs in fresh water at elevations from sea level to 2,000 metres (6,500 feet) as well as in saltwater pools. Adult forms of parasitic flatworms are confined almost entirely to specific vertebrate hosts; the larval forms, however, occur in vertebrates and in…

  • gyre (oceanography)

    Gyre, in oceanography and climatology, a vast circular system made up of ocean currents that spirals about a central point. The most prominent are the subtropical gyres, which ring subtropical high-pressure systems, and the subpolar gyres, which enclose areas of low atmospheric pressure over the

  • gyrfalcon (bird)

    Gyrfalcon, (Falco rusticolus), Arctic bird of prey of the family Falconidae that is the world’s largest falcon. Confined as a breeder to the circumpolar region except for isolated populations in Central Asian highlands, it is sometimes seen at lower latitudes in winters when food is scarce. The

  • gyri (anatomy)

    human nervous system: Morphological development: …formations of convolutions (sulci and gyri) in the cerebral cortex and folia of the cerebellar cortex. The central and calcarine sulci are discernible by the fifth fetal month, and all major gyri and sulci are normally present by the seventh month. Many minor sulci and gyri appear after birth.

  • Gyrinidae (insect)

    Whirligig beetle, (family Gyrinidae), any of about 700 species of beetles (insect order Coleoptera) that are widespread throughout the world and are usually seen in groups, spinning and whirling around on the surfaces of quiet ponds or lakes. Whirligig beetles prey on insects and other creatures

  • Gyrinocheilidae (fish)

    ostariophysan: Annotated classification: Family Gyrinocheilidae (algae eaters) Adaptations to fast currents include fleshy, suctorial mouth and inhalant-exhalant gill openings. Algae feeders. Size to 30 cm (12 inches). Inhabits mountain streams of Southeast Asia. 1 genus, 3 species. Family Psilorhynchidae (mountain carps) Size to about 8 cm (3.3 inches). Inhabits mountain…

  • gyro (food)

    Gyro, a Greek dish of roasted meat served in a pita, usually with tomato, onion, and tzatziki, a cold, creamy sauce made from yogurt, cucumber, garlic, and various spices. Gyro meat—typically lamb, beef, pork, or chicken—is roasted on a vertical skewer and sliced off in thin, crispy shavings as it

  • gyrocompass (navigational instrument)

    Gyrocompass, navigational instrument which makes use of a continuously driven gyroscope to accurately seek the direction of true (geographic) north. It operates by seeking an equilibrium direction under the combined effects of the force of gravity and the daily rotation of Earth. As such, it is

  • Gyrocotylidea (tapeworm order)

    flatworm: Annotated classification: Order Gyrocotylidea Testes confined to anterior region; genital pores near anterior end; parasitic in intestine of fish of the genus Chimaera; 105 species. Subclass Eucestoda Polyzoic tapeworms with scolex (head) of varying structure; body usually with distinct external segmentation; parasitic in intestine of vertebrates. Known

  • gyroglider (aircraft)

    autogiro: The gyroglider is an unpowered autogiro designed to glide freely on the rotary wings after release from towing.

  • gyromagnetic compass (navigational instrument)

    compass: This system is called a gyromagnetic compass.

  • Gyromitra (fungus genus)

    cup fungus: Most species of Gyromitra, a genus of false morels, are poisonous. G. brunnea is edible, however, and is found in sandy soils or woods.

  • Gyromitra brunnea (fungus)

    cup fungus: G. brunnea is edible, however, and is found in sandy soils or woods.

  • Gyromitra esculenta (fungus)

    poison: Mycotoxins: …the poisonous false morel (Gyromitra esculenta), may attain a size as large as some of the mushrooms.

  • Gyroplane (aircraft)

    helicopter: History: …a short flight in their Gyroplane No. 1, powered by a 45-horsepower engine. The Gyroplane had a spiderweb-like frame and four sets of rotors. The piloted aircraft lifted from the ground to a height of about two feet, but it was tethered and not under any control. Breguet went on…

  • gyroscope

    Gyroscope, device containing a rapidly spinning wheel or circulating beam of light that is used to detect the deviation of an object from its desired orientation. Gyroscopes are used in compasses and automatic pilots on ships and aircraft, in the steering mechanisms of torpedoes, and in the

  • gyroscope equation (physics)

    mechanics: Spinning tops and gyroscopes: …Figure 24, is called the gyroscope equation.

  • gyroscopic compass (navigational instrument)

    Gyrocompass, navigational instrument which makes use of a continuously driven gyroscope to accurately seek the direction of true (geographic) north. It operates by seeking an equilibrium direction under the combined effects of the force of gravity and the daily rotation of Earth. As such, it is

  • Gyrostemon (plant genus)

    Brassicales: The Resedaceae group: Gyrostemon has 12 species. The flowers are of different sexes and are usually small. The stamens, which have at most short stalks, are borne in one or more whorls around the central axis of the flower, as are the carpels. The fruit is very variable,…

  • Gyrostemonaceae (plant family)

    Brassicales: The Resedaceae group: Gyrostemonaceae is a small family of trees and shrubs, with 5 genera and at least 18 species, all native to Australia. Gyrostemon has 12 species. The flowers are of different sexes and are usually small. The stamens, which have at most short stalks, are borne…

  • gyrotron (electronics)

    electron tube: Fast-wave electron tubes: …fast-wave electron tube is the gyrotron. Sometimes called the cyclotron resonance maser, this device can generate megawatts of pulsed RF power at millimetre and submillimetre wavelengths. Gyrotrons make use of an energy-transfer mechanism between an electron orbiting in a magnetic field and an electromagnetic field at the cyclotron frequency. The…

  • gyrus (anatomy)

    human nervous system: Morphological development: …formations of convolutions (sulci and gyri) in the cerebral cortex and folia of the cerebellar cortex. The central and calcarine sulci are discernible by the fifth fetal month, and all major gyri and sulci are normally present by the seventh month. Many minor sulci and gyri appear after birth.

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