in zoology, the methods by which an animal, or group of animals, protects its territory from incursions by others of its species. Territorial boundaries may be marked by sounds such ...
in international law, that area of the sea immediately adjacent to the shores of a state and subject to the territorial jurisdiction of that state. Territorial waters are thus to ...
in ecology, any area defended by an organism or a group of similar organisms for such purposes as mating, nesting, roosting, or feeding. Most vertebrates and some invertebrates, such as ...
the period of the French Revolution from Sept. 5, 1793, to July 27, 1794 (9 Thermidor, year II). Caught up in civil and foreign war, the Revolutionary government decided to ...
the systematic use of violence to create a general climate of fear in a population and thereby to bring about a particular political objective. Terrorism has been practiced by political ...
English actress who became one of the most popular stage performers in both Great Britain and North America. For 24 years (1878-1902) she worked as the leading lady of Sir ...
original name Saunders Terrell American blues singer and harmonica player who became the touring and recording partner of guitarist Brownie McGhee in 1941.
interval of geologic time lasting from 66.4 to 1.6 million years ago (see ). It constitutes the first of two periods of the Cenozoic Era, the second being the Quaternary. ...
a type of Spanish literary salon that was popular in Spain from at least the 17th century and that eventually replaced the more formal academies. Tertulias were held in private ...
important early Christian theologian, polemicist, and moralist who, as the initiator of ecclesiastical Latin, was instrumental in shaping the vocabulary and thought of Western Christianity.
province, in the autonomous community (region) of Aragon, northeastern central Spain. It has an area of 5,715 sq mi (14,803 sq km), three-quarters of which is covered by mountains belonging ...
town, capital of Teruel province, in the autonomous community (region) of Aragon, northeastern Spain, at the confluence of the Guadalaviar and Turia rivers, northwest of Valencia. It originated as the ...
Italian verse form consisting of stanzas of three lines (tercets); the first and third lines rhyming with one another and the second rhyming with the first and third of the ...
civil engineer who founded the branch of civil engineering science known as soil mechanics, the study of the properties of soil under stresses and under the action of flowing water.
eastern European duchy centred on the town of Teschen (Cieszyn; q.v.) that was contested and then divided by Poland and Czechoslovakia after World War I.
coarse- to fine-grained, rather dark-coloured, intrusive igneous rock that occurs in sills (tabular bodies inserted while molten between other rocks), dikes (tabular bodies injected in fissures), and irregular masses and ...
range, northwestern Hokkaido, Japan, extending southward for nearly 125 mi (200 km) from Soya-misaki (Cape Soya), across the transverse gorge of the Ishikari-gawa (Ishikari River), to the Yubari-sammyaku. The mountains ...
in the religions of Asia Minor, the Hurrian weather god, assimilated by the Hittites to their own weather god, Tarhun (q.v.). Several myths about Teshub survive in Hittite versions. One, ...
unit of magnetic induction or magnetic flux density in the metre-kilogram-second system (SI) of physical units. One tesla equals one weber per square metre, corresponding to 104 gauss.
Serbian-American inventor and researcher who discovered the rotating magnetic field, the basis of most alternating-current machinery. He emigrated to the United States in 1884 and sold the patent rights to ...
people of central Uganda and Kenya who speak Teso (Ateso), an Eastern Sudanic (Nilotic) language of the Nilo-Saharan language family. The Teso are counted among the most progressive farmers of ...
interior or exterior floor covering composed of stone tesserae (Latin: "dice"), cubes, or other regular shapes closely fitted together in simple or complex designs with a durable and waterproof cement, ...
in mosaic work, a small piece of stone, glass, ceramic, or other hard material cut in a cubical or some other regular shape. The earliest tesserae, which by 200 BC ...
(Count) Swedish court official, statesman, and writer who was a founder of the 18th-century parliamentary Hat Party and an influential adviser to the court of Adolf Frederick.
(Italian: "texture"), in music, the general range of pitches found in a melody or vocal part. It differs from the compass of a piece to the extent that it does ...
in zoology, a protective, loose-fitting shell secreted by some protozoans (especially foraminiferans and radiolarians). In most species the organic test contains inorganic materials that may be foreign objects (e.g., sand ...
in England, Scotland, and Ireland, any law that made a person's eligibility for public office depend upon his profession of the established religion. In Scotland, the principle was adopted immediately ...
borough (district), administrative and historic county of Hampshire, England, occupying a mostly rural area in the northwestern part of the county. Situated directly north of the port of Southampton, Test ...
any member of the protozoan order Arcellinida (formerly Testacida) of the class Rhizopodea. Testaceans are usually encased in one-chambered tests, or shells, and usually found in fresh water, although sometimes ...
in literature, a tribute or an expression of conviction, as in Thomas Usk's prose allegory The Testament of Love (c. 1384) and Robert Bridges's poem The Testament of Beauty (1929). ...
one of a series of writings (including the Apostolic Constitutions and the Apostolic Tradition of Hippolytus) that claim to set forth the fundamental rules of the early Christian Church. Originally ...
the mating of an organism whose genetic constitution is unknown with an organism whose entire genetic makeup for a trait is known, to determine which genes are carried by the ...
in calligraphy, the headed ascenders or plumelike terminals to b, d, h, and l, in particular, which became an ornamental feature of the 16th-century italic bastarda script. Vespasiano Amphiareo published ...
canopy, usually of carved or cloth-draped wood, over a bed, tomb, pulpit, or throne. It dates from the 14th century and is usually made of the same material as the ...
disease characterized by uncontrolled growth of cells within the testis, the reproductive organ that produces sperm. Although testicular cancer represents only 1 percent of all cancers, it is the most ...
in animals, the organ that produces sperm (q.v.), the male reproductive cell. In humans the testis is either of the paired, oval-shaped organs that produce sperm and the male hormones, ...
an organic compound belonging to the steroid family and occurring as the androgenic, or masculinizing, hormone produced by the testis. Testosterone is responsible for development of the male sex organs ...
family of terrestrial turtles, or tortoises (order Chelonia). The group is closely related to turtles in the family Emydidae. The approximately 40 species are characterized by heavy domed shells, elephantine ...
acute infectious disease of humans and other animals, caused by toxins produced by the bacillus Clostridium tetani and characterized by rigidity and spasms of the voluntary muscles. ...
a type of cramp that is a symptom of metabolic imbalance. The muscles of the hands and feet cramp rhythmically, and there may be spasms of the larynx with difficulty ...
port city, west-central Mozambique. Tete is situated on the right bank of the Zambezi River near the rich coal mines of Moatize. Under Portuguese influence Tete had become a market ...
former equatorial ocean that is believed to have separated the former supercontinent of Laurasia in the north from Gondwana, or Gondwanaland, in the south during much of the Mesozoic Era ...
major regular moon of Saturn, remarkable for a fissure that wraps around the greater part of its circumference. It was discovered in 1684 by the Italian-born French astronomer Gian Domenico ...
segment of the Middle Rocky Mountains in the western United States, extending southward for 40 miles (64 km) across northwestern Wyoming, from the southern boundary of Yellowstone National Park to ...
river in Teton county, north-central Montana, U.S. The Teton rises northeast of the Sun River on the east slopes of the Continental Divide and is joined from the south by ...
city, north-central Morocco. It lies along the Wadi Martin, 7 miles (11 km) from the Mediterranean Sea. The city stands on a rocky plateau detached from the southern flank of ...
any of numerous attractively coloured freshwater fishes of the characin family, Characidae, often kept in home aquariums. Tetras are characteristically small, lively, hardy, and unaggressive. They are native to South ...
either of two isomeric colourless, dense, water-insoluble liquids belonging to the family of organic halogen compounds. One isomer, 1,1,2,2-tetrachloroethane, also called acetylene tetrachloride, is highly toxic. Almost the entire production ...
a colourless, dense, nonflammable, highly stable liquid belonging to the family of organic halogen compounds. Tetrachloroethylene is a powerful solvent for many organic substances. By the mid-20th century it had ...
musical scale of four notes, bounded by the interval of a perfect fourth (an interval the size of two and one-half steps, e.g., c-f). In ancient Greek music the descending ...
in classical prosody, a period made up of four colons, or a unit of four metrical sequences that each constitute a single metrical phrase of not more than about 12 ...
genus of extinct brachiopods (lamp shells) found as fossils in Triassic marine rocks (the Triassic period lasted from 245 million to 208 million years ago). Its distinctive shell has prominent ...
any of a group of broad-spectrum antibiotic compounds that have a common basic structure and are either isolated directly from several species of Streptomyces bacteria or produced ...
a sulfide mineral of bismuth and tellurium (Bi2Te2S). It is commonly found in gold-quartz veins and contact-metamorphic deposits, as in Idu, Japan; Sorata, Bolivia; Boliden, Sweden; and Boulder county, Colo., ...
organometallic compound that is the chief antiknock agent for automotive fuels. Manufactured by the action of ethyl chloride on a powdered alloy of lead and sodium, the compound is a ...
an organic phosphorus compound used as an insecticide, particularly for the control of aphids and red spider mites. Tetraethyl pyrophosphate is extremely poisonous to humans, the toxic effects being similar ...
a colourless, odourless, faintly toxic gas belonging to the family of organic halogen compounds; it is the starting material in the manufacture of polytetrafluoroethylene (q.v.), a valuable synthetic resin.
one of the structural categories to which crystalline solids can be assigned. Crystals in this system are referred to three mutually perpendicular axes, two of which are equal in length. ...
genus of extinct graptolites (colonial animals related to the chordates) that occur as fossils in marine rocks of the Early Ordovician Epoch (505 to 478 million years ago). The genus ...
common sulfosalt mineral, an antimony sulfide of copper, iron, zinc, and silver [(Cu,Fe,Zn,Ag)12Sb4S13], that is an important ore of copper and sometimes of silver. It forms gray to black metallic ...
active constituent of marijuana and hashish that was first isolated from the Indian hemp plant (Cannabis sativa) and synthesized in 1965. For the effects of the drug, see marijuana.
line of poetic verse that consists of four metrical feet. In English versification, the feet are usually iambs (an unstressed syllable followed by a stressed one, as in the word ...
any member of the order Tetraodontiformes, a group of primarily tropical marine fishes that evolved from the Perciformes (the typical advanced spiny-rayed fishes) during the Eocene Period of the Cenozoic ...
