Tribal chief A traditional tribal chief is the leadership of a tribe, or the head of a tribal form of self-government. The notion of a figurative "tribal chief" is rather vague and arbitrary; neither chief nor tribe is clearly defined, so in many cases other designations are used for the same institution, such as petty ruler or even headman.
	Tribulation The Tribulation is an event referred to in the New Testament of the Bible at and other passages. In the Futurism view of Christian eschatology, the Tribulation is a relatively short period of time where believers will experience worldwide persecution and be purified and strengthened by it.
	Tribulations "Tribulations" is the seventh single from LCD Soundsystem released on September 27, 2005. The cover was designed by Michael Vadino for DFA Design. It features a notable synthisiser riff obtained with an arpeggiator.
	Tribulus Tribulus is a genus of plants found in many warm regions. The best-known member is Tribulus terrestris, a widespread weed and also the source of a dietary supplement claimed to increase the body's natural testosterone levels and thereby improve male sexual performance and help build muscle.
	Triceratops Triceratops meaning 'three-horned face' was a Ceratopsidae herbivore dinosaur genus, from the Late Cretaceous Period of what is now North America. It shared its landscape with the fearsome Tyrannosaurus, the Armour dinosaur Ankylosaurus and the uncommon Torosaurus.
	Trichloroacetic acid Trichloroacetic acid is an analogue of acetic acid in which the three hydrogen atoms of the methyl group have all been replaced by chlorine atoms. It is prepared by the reaction of chlorine with acetic acid in the presence of a suitable catalyst. It is widely used in biochemistry for the precipitation of macromolecules such as proteins, DNA and RNA.
	Trichloroethylene The chemical compound trichloroethylene is a chlorine hydrocarbon commonly used as an industrial solvent. It is a clear non-flammable liquid with a sweet smell. Its IUPAC name is trichloroethene. In industry, it is informally referred to by the abbreviations TCE, Trike and tri, and it is sold under a variety of trade names.
	Trichoptera Members of the order Trichoptera, or caddisflies, are small moth-like insects having two pairs of hairy membranous wings. They are closely related to Lepidoptera which have scales on their wings. The two orders together form the superorder Amphiesmenoptera. Caddisflies have aquatic larva and are found in a wide variety of habitats such as streams, rivers, lakes, ponds, spring seeps, and temporary waters.
	Trichostema lanceolatum The annual herb of the Lamiaceae Trichostema lanceolatum is commonly known as vinegar weed because its foliage contains volatile oils that have a strong vinegar odor. Other common names for the plant include terpentine weed and camphor weed. The oils also have Phyto- properties, which help vinegar weed compete by killing or injuring other plant species.
	Trichuriasis Trichuriasis is a parasitic disease caused by infection of the large intestine by a parasite whipworm .
	Trickster In mythology, and in the study of folklore and religion, a trickster is a god, goddess, spiritual being, human hero or anthropomorphism animal who plays pranks or otherwise disobeys normal rules and norms of behaviour. There is also an online game named Trickster Online released in 2006.
	Tricky Adrian Thaws , better known as Tricky, is an British people Hip hop music and musician important in the trip hop and British music scene . He is noted for a whispering lyrical style that is half-rapped, half-sung. As a producer and a musician, he is noted for a dark, rich and layered sound.
	Tricolour A tricolour is a flag or banner having three colours, usually in approximately equal size and lacking additional symbols. One of the first tricolours and the oldest tricolour still in use today is the flag of the Netherlands; one of the first vertical tricolours is the Flag of France of France.
	Tricorne The tricorne is a style of hat that was popular during the 18th century, falling out of style shortly before the French Revolution. At the peak of its popularity, the tricorne was worn as civilian dress and as part of military and naval uniforms. The black-coloured tricorne has a rather broad brim, pinned up on either side of the head and at the back, producing a triangular shape.
	Tricycle A tricycle is a three-wheeled vehicle. Tricycles generally follow one of two layouts: *delta, with two wheels at the back and one steered wheel at the front; and *tadpole, with two steered wheels at the front and one wheel at the back. Not all trikes fall into one of these two classes.
	Tricyclic antidepressant Tricyclic antidepressants are a class of antidepressant Medications first used in the 1950s. They are named after the drugs' molecular structure, which contains three rings of atoms . The term 'tricyclic antidepressant' is sometimes abbreviated to TCA.
	Trident A trident is a three pronged staff or spear. The French word's origin is from Latin language tridens or tridentis, from tri "three" and dentes "teeth". It was used by fishing to catch fish. As a weapon, it was also used by the retiarius, Ancient Rome gladiators, who used a net to wrap their adversary and a trident to kill him.
	Tridymite Tridymite is a high-temperature polymorph of quartz and usually occurs as minute tabular white or colorless pseudo-hexagonal triclinic crystals, or scales, in cavities in acidic volcanic rocks. Tridymite is stable between 870 and 1470 degrees Celsius. It has a Mohs hardness of 6.5 to 7, a specific gravity of 2.28 to 2.33 and refractive index of na=1.471 - 1.482 nß=1.472 - 1.483 n?=1.474 - 1.488.
	Trier Trier is a city in Germany on the western bank of the Moselle River. It is the oldest large city in Germany, having already established a population in the tens of thousands before 100 AD. Trier lies in a valley between low vine-covered hills of ruddy sandstone in the west of the state of Rhineland-Palatinate, near the German border with Luxembourg and within the important Mosel-Saar-Ruwer wine-growing region.
	Trifle Trifle is a United Kingdom dessert dish made from thick custard, fruit, sponge cake, fruit juice or, more recently, gelatin dessert and whipped cream , usually arranged in layers with fruit and sponge on the bottom, custard and cream on top. Some trifles contain a small amount of alcohol - non-alcoholic versions use fruit juice instead, as the liquid is necessary to moisten the cake.
	Trifoliate orange Trifoliate Orange is a member of the family Rutaceae, closely related to Citrus, and sometimes included in that genus, being sufficiently closely related to allow it to be used as a rootstock for Citrus. It differs from Citrus in having deciduous, compound leaf, and pubescent fruit.
	TRIGA TRIGA is a class of small nuclear reactor designed and manufactured by General Atomics of the USA. TRIGA is an acronym of "Training, Research, Isotopes, General Atomics". The design team for TRIGA was led by the physicist Freeman Dyson. TRIGA is a pool type reactor that can be installed without a containment building, and is designed for use by scientific institutions and universities for purposes such as graduate education, private commercial research, non-destructive testing and isotope production.
	Trigeminal nerve The trigeminal nerve is responsible for sensation in the face. It is similar to the spinal nerves C2-S5 that are responsible for sensation in the rest of the body. Sensory information from the face and body is processed by parallel pathways in the central nervous system. The fifth nerve is primarily a sensory nerve, but it also has certain motor functions.
	Trigeminal neuralgia Trigeminal neuralgia, or Tic Douloureux, is a Neuropathy disorder of the trigeminal nerve that causes episodes of intense pain in the eyes, lips, nose, scalp, forehead, and jaw. Trigeminal neuralgia is considered by many to be among the most painful of conditions and has been labeled the "suicide disease," due to the significant numbers of people taking their own lives because they were unable to have their pain controlled with medications or surgery.
	Triggerfish Triggerfishes are brightly coloured fishes of the family Balistidae. Marked by lines and spots, they inhabit warm coastal waters of the Atlantic, Mediterranean and the Indo-Pacific. Their size varies from 30 cm to 75 cm. Most are solitary and diurnal. They feed on hard-shelled invertebrates, a few feed on large zooplankton or algae.
	Triglyceride is glyceride in which the glycerol is esterified with three fatty acids. It is the main constituent of vegetable oil and animal fats.
	Trigonella Trigonella is a large genus from the family Fabaceae. The most common member is the herb Fenugreek.
	Trigonometric function In mathematics, the trigonometric functions are function s of an angle; they are important when studying triangle s and modeling periodic phenomena, among many other applications. They are commonly defined as ratios of two sides of a right triangle containing the angle, and can equivalently be defined as the lengths of various line segments from a unit circle.
	Trigonometry Trigonometry is a branch of mathematics dealing with angles, triangle s and trigonometric functions such as sine, cosine and tangent. It has some relationship to geometry, though there is disagreement on exactly what that relationship is; for some, trigonometry is just a subtopic of geometry.
	Trilby A trilby or trilby hat is a soft felt men's hat with a narrow brim and a deeply indented crown. It is traditionally made from rabbit fur felt, but may also be made of other materials such as tweed. Trilby hats are softer than Homburgs, and have a flexible rather than curved brim.
	Trillium Trillium is a genus of about 40-50 species of perennial herbaceous flowering plants, native to temperate regions of North America and Asia. They used to be treated in the family Trilliaceae or Trillium family, a part of the Liliales or Lily order. The Angiosperm Phylogeny Group treats Trilliaceae as a synonymy of the family Melanthiaceae.
	Trillium erectum The Wake-robin, also known as the Beth root or Stinking Benjamin, Trillium erectum, is a spring-flowering perennial plant native to the east and north-eastern areas of the United States. The flowers are a deep red colour, and the plant takes its name Wake-robin by analogy with the European Robin, which has a red breast that heralds spring.
	Trilobite Trilobites are extinction arthropods in the class Trilobita. They appeared in the Cambrian period and flourished throughout the lower Paleozoic era before slowly declining to extinction. The last of the trilobites disappeared in the Permian-Triassic extinction event at the end of the Permian 250 million years ago .
	Trilogy A trilogy is a set of three works of art, usually literature or film, that are connected and can generally be seen as a single work as well as three individual ones. Most trilogies are works of fiction involving the same characters or setting, such as The Deptford Trilogy of novels by Robertson Davies or The Godfather films of Francis Ford Coppola.
	Trimaran A trimaran is a multihull boat consisting of a main Hull and two smaller outrigger hulls, attached to the main hull with lateral struts. The design and names for the trimaran components are derived from the original proa constructed by native Pacific Islanders.
	Trimipramine Trimipramine is an tricyclic antidepressant with sedative and anxiolytic properties.
	Trimorphodon Trimorphodon is a genus of mildly venom, rear-fanged, colubrid snakes. They are commonly known as lyre snakes, named after the distinctive V shaped pattern on their head that is said to resemble the shape of a lyre. The word Trimorphodon is a combination of three Greek language words, 'tri' - three, 'morph' - shape, and 'odon' - teeth, which refers to the three distinct kinds of teeth that lyre snakes have: recurved anterior teeth; shorter middle teeth, and large grooved [
	Trimurti In Hinduism, the Trimurti is a concept that holds that God has three aspects, which are only different forms of the same one God. The three aspects of God, or "Parabrahman," or God's personae are as Brahma , Vishnu and Shiva . The Trimurti itself is conceived of as a deity and artistically represented as a three-faced human figure.
	Trinidad Trinidad is the largest and most populous of the 23 islands of Trinidad and Tobago which make up the country of Trinidad and Tobago. Trinidad is the southernmost island in the Caribbean and lies just 11 kilometer off the northeastern coast of Venezuela. Trinidad has an area of 4,769 km and is located between and .
	Trinidad and Tobago The Republic of Trinidad and Tobago is a country in the southern Caribbean Sea, situated 11 kilometres off the coast of Venezuela. It lies between 10 2' and 1112'N. Lat., and 6030' and 6156' W Long. The country is an archipelagoArchipelagic Waters and Exclusive Economic Zone Act No 24 of 1986 in the Caribbean specifically, the Lesser AntillesCohen, Saul B., ed.
	Trinitrotoluene Trinitrotoluene is an explosive. Its empirical formula is C7H5N3O6. The name for TNT is, in accordance with the nomenclature of the IUPAC, 2-methyl-1,3,5-trinitrobenzene. In this article the more common designation trinitrotoluene is used.
	Trinity Within Christianity, the doctrine of the Trinity states that God is a monotheism who exists, simultaneously and eternity, as a perichoresis of three persons : God the Father ; the Son of God#In the New Testament ; and the Holy Spirit .
	Triode A triode is a type of vacuum tube with three elements: the filament or cathode, the control grid, and the plate or anode. The triode vacuum tube was the first electrical amplifier device. The principle of its operation is that, like in a vacuum tube based diode, the heated filament causes a flow of electrons that hit the plate and create an electric charge to it.
	Trionychidae Trionychidae is a taxonomy family which comprises a number of turtle genus commonly known as softshell turtles. It consists of some of the world's largest fresh water turtles. Members of this family occur in Africa, Asia, North America, and the East Indies.
	Tripe Tripe is a type of edible offal made from the stomach of various domestic animals. Beef tripe is typically made from the first three of a cattle's four stomachs, the rumen, the Ruminant, and the omasum. Abomasum tripe is also seen, but with much less frequency, owing to its glandular tissue content.
	Triple Frontier The Triple Frontier should not be confused with Tres Fronteras, at the common border among Brazil, Peru, and Colombia. The Triple Frontier is the tri-border area along the junction of Paraguay, Argentina, and Brazil near the cities of Ciudad del Este, Alto Paran; Puerto Iguaz, Misiones Province and Foz do Iguau, Paran respectively and is the location of the Iguazu Falls, largest waterfalls in the world, and the Itaipu, the largest hydroelectric plant in the world.
	Tripletail Tripletails are perciform fishes in the family Lobotidae.
	Tripoli Tripoli is the capital city of Libya. It has a population of 1.68 million. The city is located in the northwest of the country on the edge of the desert, on a point of rocky land projecting into the Mediterranean Sea and forming a bay. Tripoli was founded, in the 7th century BCE, by the Phoenicians, who named it Oea.
	Triptych A triptych is a work of art which is divided into three sections, or three Wood carving panels which are hinged together. The central panel is the most important one, and this is flanked on either side by two lesser but related paintings. The whole is intended to be greater than the sum of the parts.
	Trireme Triremes are several different types of ancient warships. In English no differentiation is made between the Greek trieres and the Latin triremes. This can confuse, while in other languages these describe different ships. The early type had three rows of oars on each side, manned with one man per oar.
	Triskaidekaphobia Triskaidekaphobia is a fear of the number 13 . It is usually considered to be a superstition. A specific fear of Friday the 13th is called paraskavedekatriaphobia or friggatriskaidekaphobia.
	Triskelion Triskelion is a symbol consisting of 3#In human culture bent human legs, or, more generally, three interlocked spirals, or any similar symbol with three protrusions and a three-fold rotational symmetry. A triskelion is the symbol of Sicily and the Isle of Man, and a symbol of Brittany; the Sicilian and Manx triskelions feature three running legs, bent at the knee, conjoined at the crotch.
	Trisodium phosphate Trisodium phosphate, available at most hardware stores in white powder form, is a cleaning agent and degreaser, commonly used to prepare household surfaces for painting. It can also be called trisodium orthophosphate and has the chemical formula Na3PO4. It is a highly water-soluble ionic salt.
	Tristan Tristan is one of the main characters of the Tristan and Iseult story, a Cornwall hero and one of the Knights of the Round Table featuring in the Matter of Britain. He was the son of Blancheflor and Rivalen, and the nephew of King Mark of Cornwall, sent to fetch Iseult back from Ireland to wed the king.
	Tristan Tzara Tristan Tzara is the assumed name of the Romanian artist Sami Rosenstock, born in Moinesti, Bacau County, Romania, a poet and essayist who lived for the majority of his life in France. He is known mainly as a founder of Dada, an avant garde revolutionary movement in the arts.
	Tritium Tritium is a radioactive isotope of hydrogen. The atomic nucleus of tritium contains one proton and two neutrons, whereas the nucleus of Hydrogen_atom contains no neutrons. Its atomic weight is 3.0160492. It is a gas at standard temperature and pressure.
	Tritón Trit?n is a Mexico magazine dedicated to news, books and information on swimming, diving and waterpolo. See also *List of Mexican magazines External links Category:Sports magazines Category:Mexican magazines
	Triturus Triturus is a genus of newt, commonly known as the crested newts. Members of this genus spent part of the year ashore, visiting the water for reproduction. The males develop a flexible skin crest on back and tail, sometimes brightly coloured. Triturus shows an unusual mating ritual during which the male courts the largely passive female.
	Triumphal arch A triumphal arch is a structure in the shape of a monumental archway, usually built to celebrate a victory in war. The arch is invariably a free-standing structure, quite separate from city gates or walls. In its simplest form a triumphal arch consists of two pillars connected by an arch, crowned with a superstructure or Attic style on which a statue might be mounted or which bears commemorative inscriptions.
	Trivet A trivet is an object placed between a serving dish or bowl, and a dining table, usually to protect the table from heat damage. Metal trivets are often tripod-like structures with three legs that hold the dish or pot above the table surface. They often contain a receptacle for a candle that can be lit to keep food hot.
	Trogon The trogons and quetzals are birds in the order Trogoniformes which contains only one family, the Trogonidae. Alternatively, they might constitute a member of the basal radiation of the order Coraciiformes . The word "trogon" is greek language for "nibbling" and refers to the fact that these birds gnaw holes in trees to make their nests.
	Trojan Horse The Trojan Horse is part of the myth of the Trojan War, as told in Virgil's Latin epic poem The Aeneid. The events of this myth take place after Homer's Iliad, and before both Homer's The Odyssey and Virgil's The Aeneid. Although this incident is mentioned in the Odyssey:
	Trojan War The Trojan War was a war waged, according to legend, against the city of Troy in Asia Minor , by the armies of the Achaeans, after Paris of Troy stole Helen from her husband Menelaus, king of Sparta. The war is among the most important events in Greek mythology and was narrated in many works of Greek literature, of which the two most famous are the Iliad and the Odyssey of Homer.
	Troll A troll is a fearsome member of a Mythologyical anthropomorph race from Scandinavia. Their role ranges from fiendish giants similar to the ogres of England to a devious, more human-like folk of the wilderness, living underground in hills, caves or mounds. In Shetland and Orkney tales, trolls are called trowe, adopted from the Norse language when these islands were settled by Vikings.
	Trolleybus A trolleybus is a bus powered by two overhead electric wires, from which it draws electricity using two trolley poles. Two poles are required in order to accommodate the return current, which cannot pass to the ground as in the case of an electric tram or streetcar since trolleybuses use rubber tires, rather than steel wheels on rail.
	Trollius Trollius is a genus of about 30 species of plants in the Ranunculaceae, closely related to Ranunculus. The common name is globeflower or globe flower. They are native to the cool temperate regions of the Northern Hemisphere, with the greatest diversity of species in Asia, and usually grow in heavy, wet clay soils.
	Trombone The trombone is a musical instrument in the brass instrument family. A lip-reed aerophone with a predominantly cylindrical bore, the trombone is usually characterised by a telescopic slide with which the player varies the length of the tube to change pitches. A person who plays the trombone is referred to as a trombonist.
	Trompe l'oeil Trompe-l'il is an art technique involving extremely realistic imagery in order to create the optical illusion that the depicted objects really exist. Although the phrase has its origin in the Baroque period, use of trompe-l'il dates back much further. It was often employed in murals, and instances from Greek and Roman times are known, for instance from Pompeii.
	Trondheim Trondheim is a city and municipalities of Norway in the counties of Norway of Sr-Trndelag, Norway. Founded in 997, Trondheim is today a centre of education, technical and medical research, with 30,000 students, and is the country's third largest city,
	Troopship A troopship is a ship used to carry soldiers, either in peacetime or wartime. Operationally, troopships are normal ships, and unlike landing ships, cannot land troops directly on shore, typically loading and unloading at a seaport. Originally regular navy vessels were used to carry troops overseas, typically in an ad hoc fashion.