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trichomoniasis ... Trippe, Juan T.

trichomoniasis: infection by the flagellate protozoan parasite Trichomonas. Infection is most often intestinal, but it may occur in other cavities or organs such as the liver. The species T. vaginalis may ...
Trichomycetes: class of fungi (division Mycota) with a vegetative body (thallus) consisting of single or branched filaments (hyphae). The class was earlier subsumed under the group Phycomycetes (q.v.). Trichomycetes occur in ...
Trichophyton: a genus of fungi (division Mycota) that infects the skin, hair, and nails of man and other animals. It is one of several causes of athlete's foot, jockstrap itch, and ...
trichostome: any ciliate protozoan of the holotrichous order Trichostomatida. Free-living forms are found in freshwater (e.g., Tillina), salt water (e.g., Woodruffia), and decaying vegetation; parasitic forms also occur. Trichostomes usually have ...
Trichur: town, administrative headquarters of Trichur district, central Kerala state, southwestern India. The town is located 12 mi (19 km) inland on an extensive lagoon system. A commercial and cultural centre, ...
trickster tale: in oral traditions worldwide, an anecdote of deceit, magic, and violence perpetrated by an animal-human with special or magical powers. Usually grouped in cycles, these tales feature a trickster-hero who ...
triclinic system: one of the structural categories to which crystalline solids can be assigned. Crystals in this system are referred to three axes of unequal lengths that are inclined at angles less ...
Triclinius, Demetrius: Byzantine scholar of the Palaeologan era, who edited the works of the ancient Greek poets, mainly the tragedians, with metrical and exegetical scholia (annotations).
Triconodon: genus of extinct primitive mammals found in Europe as fossil deposits of the Late Jurassic (163 to 144 million years ago). Triconodon is representative of the triconodonts, known throughout the ...
Trident missile: American-made submarine-launched ballistic missile (SLBM) that succeeded the Poseidon and Polaris missiles in the 1980s and '90s. Under development from the late 1960s, the Trident developed into two models. The ...
tridymite: silica mineral, the stable form of silica (silicon dioxide, SiO₂) at temperatures between 870° and 1,470° C (1,598° and 2,678° F); at lower temperatures it transforms to high-quartz, at higher ...
Trier: city, Rhineland-Palatinate Land (state), southwestern Germany. It lies on the right bank of the Moselle (Mosel) River, surrounded by the foothills of the Eifel, Hunsruck, and Mosel ...
Trieste: city and capital of Friuli-Venezia Giulia regione and of Trieste provincia, northeastern Italy, located on the Gulf of Trieste at the northeastern corner of ...
Trieste: bathyscaphe (q.v.) launched by Auguste Piccard in 1953.
Trifid Nebula: (catalog numbers NGC 6514 and M 20), bright, diffuse nebula in the constellation Sagittarius, lying several thousand light-years from the Earth. It was discovered by the French astronomer Legentil de ...
triforium: in architecture, space in a church above the nave arcade, below the clerestory, and extending over the vaults, or ceilings, of the side aisles. The term is sometimes applied to ...
Trigere, Pauline: French-born American couturiere whose award-winning design work was especially popular in the United States in the 1950s and '60s.
triggerfish: any of about 30 species of shallow-water marine fishes of the family Balistidae, found worldwide in tropical seas. Triggerfishes are rather deep-bodied, usually colourful fishes with large scales, small mouths, ...
Triglav: mountain peak, the highest (9,396 feet [2,864 m]) of Slovenia and of the Julian Alps, situated 40 miles (64 km) northwest of the city of Ljubljana. The north wall of ...
triglyceride: any one of an important group of naturally occurring lipids (fat-soluble components of living cells). Triglycerides are esters in which three molecules of one or more different fatty acids are ...
trigonal system: one of the structural categories to which crystalline solids can be assigned. The trigonal system is sometimes considered to be a subdivision of the hexagonal system.
Trigonia: genus of mollusks that first appeared during the Jurassic period, which began about 208 million years ago. The still-extant Trigonia has a triangular shell with distinctive concentric ridges on its ...
trigonometry: the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry. Their names and abbreviations ...
trigonometry table: tabulated values for some or all of the six trigonometric functions for various angular values. Once an essential tool for scientists, engineers, surveyors, and navigators, trigonometry tables became obsolete with ...
Trikala: agricultural and grazing centre of Thessaly (Thessalia), Greece, and capital of the nomos (department) of Trikala. It commands the Metsovon Pass leading westward across the Pindus Mountains and on the ...
trikaya: (Sanskrit: "three bodies"), in Mahayana Buddhism, the concept of the three bodies, or modes of being, of the Buddha: the dharmakaya (body of essence), the unmanifested mode, and the supreme ...
Trikoupis, Kharilaos: statesman who sought with limited success to foster broad-scale national development in Greece during the last quarter of the 19th century. Together with a rival, Theodoros Dhiliyiannis (q.v.), he dominated ...
trilateration: method of surveying in which the lengths of the sides of a triangle are measured, usually by electronic means, and, from this information, angles are computed. By constructing a series ...
trill: in phonetics, a vibration or series of flaps (see flap) of the tongue, lips, or uvula against some other part of the mouth. The Spanish rr in perro ("dog") is ...
Trilling, Lionel: American literary critic and teacher whose criticism was informed by psychological, sociological, and philosophical methods and insights.
Trillium: genus of spring-flowering perennial herbs of the family Liliaceae, consisting of about 25 species, native to North America and Asia. They have oval leaves in whorls of three at the ...
trilobite: any member of a group of extinct fossil arthropods easily recognized by their distinctive three-lobed, three-segmented form. Trilobites, exclusively marine animals, first appeared at the beginning of the Cambrian Period, ...
trilogy: a series of three dramas or literary or musical compositions that, although each is in one sense complete, have a close mutual relation and form one theme or develop aspects ...
Trim: market town and seat of County Meath, Ireland, on the River Boyne. It was important from ancient times and was the seat of a bishopric. St. Patrick is said to ...
trimaran: three-hulled variant of the catamaran (q.v.).
Trimble, David: politician who served as first minister of the Northern Ireland Assembly (1998-2002), leader of the Ulster Unionist Party (UUP; 1995-2005), and a member of the British Parliament (1990-2005). In 1998 ...
Trimble, Robert: associate justice of the United States Supreme Court (1826-28).
Trimurti: (Sanskrit: "Three Forms"), in Hinduism, a triad of the three great gods, Brahma, Vishnu, and Siva. Scholars consider the Trimurti doctrine as an attempt to reconcile different monotheistic approaches with ...
Trincomalee: town and port, Sri Lanka, on the island's northeastern coast. It is situated on a peninsula in Trincomalee Bay-formerly called Koddiyar (meaning "Fort by the River") Bay-one of the world's ...
Tringa: genus of shorebirds in the family Scolopacidae (order Charadriiformes). Its members include the birds known as greenshank, redshank, sandpiper, and yellowlegs (qq.v.).
Trinh Family: noble family that dominated northern Vietnam during much of the Later Le dynasty (1428-1788); it gained control of the position of regent to the Le rulers in the middle of ...
Trinidad: city, southwest Sancti Spiritus provincia (province), central Cuba. It lies on the southern slopes of the Sierra de Trinidad, north of its Caribbean port of Casilda. Founded ...
Trinidad: city, south-central Uruguay. It lies in the Porongos Hills, a northern outlier of the Grande Inferior Range. The city is the area's principal trade and manufacturing centre. Wheat, corn (maize), ...
Trinidad: city, seat (1866) of Las Animas county, south-central Colorado, U.S., situated on the Purgatoire River in the foothills of the Sangre de Cristo Mountains at an elevation of 6,025 feet ...
Trinidad: city, northeastern Bolivia. It lies in the Moxos (Mojos) Plains, an ancient lake bed stretching eastward from the foothills of the Andean eastern cordillera. In 1686 Jesuits led by Father ...
Trinidad and Tobago: island state of the West Indies. Forming the two southernmost links in the Caribbean chain, the islands lie close to the South American continent, northeast of Venezuela and northwest of ...
Trinil faunal zone: middle Pleistocene sequence of deposits characterized by distinctive animal forms (the Pleistocene epoch began about 1,600,000 years ago and ended about 10,000 years ago). The Trinil deposits, found in Southeast ...
Trinitarian: a Roman Catholic order of men founded in France in 1198 by St. John of Matha to free Christian slaves from captivity under the Muslims in the Middle East, North ...
trinitrotoluene: a pale yellow, solid organic nitrogen compound used chiefly as an explosive, prepared by stepwise nitration of toluene. Because TNT melts at 82° C (178° F) and does not explode ...
Trinity: in Christian doctrine, the unity of Father, Son, and Holy Spirit as three persons in one Godhead.
Trinity College: private, coeducational institution of higher learning in Hartford, Conn., U.S. It is a nonsectarian liberal arts college that has a historical affiliation with the Episcopal church. It offers B.A. and ...
Trinovantes: in ancient Britain, a powerful tribe living north and northeast of what is now London. When Julius Caesar invaded Britain in 54 BC, they joined him against their western rivals, ...
Trintignant, Jean-Louis: French motion-picture actor who achieved a wide range of characterizations with great economy.
trio: musical composition for three instruments or voices, or a performing group of three voices or instruments.
trio sonata: major chamber-music genre in the Baroque era (c. 1600-c. 1750), written in three parts: two top parts played by violins or other high melody instruments, and a basso continuo part ...
triode: electron tube consisting of three electrodes-cathode filament, anode plate, and control grid-mounted in an evacuated metal or glass container. It has been used as an amplifier for both audio and ...
triolet: medieval French verse form that consists of eight short lines rhyming ABaAabAB (the capital letters indicate lines that are repeated). The name triolet is taken from the three repetitions of ...
triphenylmethane dye: any member of a group of extremely brilliant and intensely coloured synthetic organic dyes having molecular structures based upon that of the hydrocarbon triphenylmethane. They have poor resistance to light ...
triphylite: common phosphate mineral, lithium iron phosphate (LiFePO₄), usually forming bluish or grayish, glassy masses in lithium- and phosphate-rich granite pegmatites. It forms a solid-solution series with the similar, but more ...
Triple Alliance: secret agreement between Germany, Austria-Hungary, and Italy formed in May 1882 and renewed periodically until World War I. Germany and Austria-Hungary had been closely allied since 1879 and sought additional ...
Triple Alliance, War of the: (1864/65-70), the bloodiest conflict in Latin American history, fought between Paraguay and the allied countries of Argentina, Brazil, and Uruguay.
triple bond: in chemistry, a covalent linkage in which two atoms share three pairs of electrons, as in the nitrogen molecule, N₂. One of the electron pairs is present in a sigma ...
Triple Crown: in U.S. horseracing, an unofficial championship attributed to a horse that in a single season wins the Kentucky Derby, the Preakness Stakes, and the Belmont Stakes (qq.v.).
Triple Crown: in British horseracing, an unofficial championship attributed to a colt or filly that in a single season wins the races known as the Derby, the Saint Leger, and the Two ...
Triple Entente: association between Great Britain, France, and Russia, the nucleus of the Allied Powers in World War I. It developed from the Franco-Russian alliance that gradually developed and was formalized in ...
triple jump: event in athletics (track and field) in which an athlete makes a horizontal jump for distance incorporating three distinct, continuous movements-a hop, in which the athlete takes off and lands ...
tripletail: any of four species of fishes constituting the family Lobotidae (order Perciformes). The family contains two genera (Lobotes and Datnioides), with members of the first genus found in tropical or ...
triplite: phosphate mineral, consisting of manganese, iron, magnesium, and calcium phosphate [(Mn, Fe, Mg, Ca)₂PO₄(F,OH)]. It occurs as brightly coloured (brown, salmon, flesh-red) masses in granite pegmatites, notably in Bavaria, Ger.; ...
tripod: any piece of furniture with three legs. The word can apply to a wide range of objects, including stools, tables, light stands, and pedestals. The tripod was very popular in ...
tripoli: porous, friable, microcrystalline siliceous rock of sedimentary origin that is composed chiefly of chalcedony and microcrystalline quartz. Although the name tripoli was chosen because of the rock's superficial resemblance to ...
Tripoli: ("The Eastern Tripoli"), city and port, northwestern Lebanon. It lies on the Mediterranean coast at the mouth of the Abu 'Ali River, 40 miles (65 km) north-northeast of Beirut.
Tripoli: capital city of Libya. Situated in northwestern Libya along the Mediterranean coast, it is the nation's largest city and chief seaport.
Tripolis: city and commercial centre of the central Peloponnese, Greece, and the capital and only large town of the nomos (department) of Arcadia. It is situated 2,175 feet (663 m) above ...
Tripolitan War: (1801-05), conflict between the United States and Tripoli (now in Libya), incited by American refusal to continue payment of tribute to the piratical rulers of the North African Barbary States ...
Tripolitania: historical region of North Africa that now forms the northwestern part of Libya.
Trippe, Juan T.: American pioneer in commercial aviation and one of the founders of the company that became Pan American World Airways, Inc.