Tennessee River, central component of one of the world’s greatest irrigation and hydropower systems and a major waterway of the southeastern United States. It is formed by the confluence of the Holston and French Broad rivers, just east of Knoxville, Tennessee, and flows south-southwest to

Tennessee State University, public, coeducational institution of higher learning in Nashville, Tennessee, U.S., part of the State University and Community College System of Tennessee. A historically black university, it still has a largely African American enrollment. Tennessee State is a

Tennessee Titans, American professional gridiron football team based in Nashville, Tennessee. The Titans play in the American Football Conference (AFC) of the NFL and earned a berth in Super Bowl XXXIV in 2000. The franchise was located in Houston, Texas, and was known as the Oilers from 1960 to

Taser: The Supreme Court’s decision in Tennessee v. Garner (1985) highlighted that there were significant limits to the use of deadly force under the Bill of Rights.

Americans with Disabilities Act: …but three years later, in Tennessee v. Lane (2004), the court decided in favour of two people with physical disabilities who alleged that the state of Tennessee did not provide accessible courtrooms for the use of both private citizens and state employees.

Tennessee Valley Authority (TVA), U.S. government agency established in 1933 to control floods, improve navigation, improve the living standards of farmers, and produce electrical power along the Tennessee River and its tributaries. The Tennessee River was subject to severe periodic flooding, and

Tennessee walking horse, breed of horse that derives its name from the state of Tennessee and from its distinctive gait—the running walk. In a broad sense, it originated from all the ancestors that could do a running walk. Allan F-I (foaled 1886), a Standardbred stallion with several crosses of

Tennessee walking horse, breed of horse that derives its name from the state of Tennessee and from its distinctive gait—the running walk. In a broad sense, it originated from all the ancestors that could do a running walk. Allan F-I (foaled 1886), a Standardbred stallion with several crosses of

Tennessee walking horse, breed of horse that derives its name from the state of Tennessee and from its distinctive gait—the running walk. In a broad sense, it originated from all the ancestors that could do a running walk. Allan F-I (foaled 1886), a Standardbred stallion with several crosses of

Army of Tennessee, primary Confederate army of the Western Theatre during the American Civil War (1861–65). Although the army fought in numerous engagements, it won few victories. In addition to facing some of the Union’s most capable generals, the army was plagued by problems of command, supply,

U.S. state flag consisting of a red field (background) with a central white-bordered blue disk bearing three white stars; at the fly end are unequal vertical stripes of white and blue.During the Civil War (1861–65) a motion was submitted to the legislature calling for use of the Stars and Bars as

University of Tennessee, state university system based in Knoxville, Tennessee, U.S. It is a comprehensive, land-grant institution of higher education. In addition to the main campus, there are branch campuses at Chattanooga and Martin as well as a health science centre at Memphis. The university

Tennessee-Tombigbee Waterway, American waterway linking the Tennessee River in northeastern Mississippi with the Tombigbee River in western Alabama. The 234-mile (376-kilometre) system of locks and canals along the upper Tombigbee River south to Demopolis, Ala., gives access via the lower Tombigbee

tennessine (Ts), artificially produced transuranium element of atomic number 117. In 2010 Russian and American scientists announced the production of six atoms of tennessine, which were formed when 22 milligrams of berkelium-249 were bombarded with atoms of calcium-48, at the cyclotron at the Joint

Carolee Schneemann: …of her and her husband, James Tenney (divorced 1968), having sex. Given its explicit content, Fuses did not have a broad viewership. The film was screened at the Cannes film festival in 1969, and audience members reacted to it with outrage and violence. The other two films in her Autobiographical…

Sir John Tenniel was an English illustrator and satirical artist, especially known for his work in Punch and his illustrations for Alice’s Adventures in Wonderland (1865) and Through the Looking-Glass (1872). Tenniel attended the Royal Academy schools and in 1836 sent his first picture to the

Captain & Tennille: …team of Daryl Dragon and Toni Tennille. Captain & Tennille rose to the top of the pop charts in the mid-1970s with their upbeat rendition of Neil Sedaka’s “Love Will Keep Us Together.” As the top-selling single of 1975, the song launched the duo into pop stardom.

The Sea of Fertility: …Dawn), and Tennin gosui (The Decay of the Angel)—is set in Japan, and together they cover the period from roughly 1912 to the 1960s. Each of them depicts a different reincarnation of the same being: as a young aristocrat in 1912, as a political fanatic in the 1930s, as…

tennis, game in which two opposing players (singles) or pairs of players (doubles) use tautly strung rackets to hit a ball of specified size, weight, and bounce over a net on a rectangular court. Points are awarded to a player or team whenever the opponent fails to correctly return the ball within

tennis: Court and equipment: A tennis ball consists of a pressurized rubber core covered with high-quality cloth, usually wool mixed with up to 35 percent nylon. Balls gradually go soft with use, and in tournament play they are changed at regular intervals agreed upon by officials and depending upon such…

De Beers S.A.: The diamond “tennis bracelet,” introduced in the 1980s, capitalized on a fad that had begun after tennis star Chris Evert accidentally dropped her bracelet on the court during a tennis match. In 2001 De Beers began marketing the “right-hand ring” for single women, designed as a symbol…

Tennis Court Oath, (June 20, 1789), dramatic act of defiance by representatives of the nonprivileged classes of the French nation (the Third Estate) during the meeting of the Estates-General (traditional assembly) at the beginning of the French Revolution. The deputies of the Third Estate,

tennis elbow, an injury characterized by pain at the lateral (outer) aspect of the elbow. The patient may also complain of tenderness on palpation of the area of concern, usually the dominant arm. This entity was first described in a scientific article in 1873, and since that time the mechanism of

Barry Hannah: Hannah’s other novels include The Tennis Handsome (1983), which portrays the misadventures of a dissipated professional tennis player; Hey Jack! (1987); Never Die (1991), an offbeat treatment of the western genre; and Yonder Stands Your Orphan (2001), which tells the stories of a town of eclectic and unsavoury characters,…

tennis: The open era: …female players formed guilds—the men’s Association of Tennis Professionals (ATP) and the Women’s Tennis Association (WTA), which in 1986 became the Women’s International Tennis Association (WITA). Previous player unions had been ineffective, but the ATP showed itself a potent political force when the majority of its members boycotted Wimbledon in…

tennō, (Japanese: “heavenly emperor”), the title of Japan’s chief of state, bestowed posthumously together with the reign name chosen by the emperor (e.g., Meiji Tennō, the emperor Meiji). The term was first used at the beginning of the Nara period (710–784) as a translation of the Chinese

bark-gnawing beetle: Tennochilus virescens, an eastern species, is blue-green in colour and has a ferocious bite.

Ōsaka-Kōbe metropolitan area: Cultural life: …Castle, Tsurumi Ryokuchi, Nagai, and Tennoji, the latter with a zoo and botanical gardens. The suburbs have many historical sites and large recreation areas. Besides the spacious man-made Hattori Ryokuchi and Meiji no Mori Minoo parks, there are the recreational areas of the Kii Peninsula on the Pacific, the beaches…

Tennsift River, river in west-central Morocco. The Tennsift River rises from several headstreams in the High Atlas (Haut Atlas) mountains and flows westward for 160 miles (260 km) to the Atlantic Ocean, south of Safi. The Tennsift’s river valley, the Haouz lowland, has been transformed from an arid

Tennsift River, river in west-central Morocco. The Tennsift River rises from several headstreams in the High Atlas (Haut Atlas) mountains and flows westward for 160 miles (260 km) to the Atlantic Ocean, south of Safi. The Tennsift’s river valley, the Haouz lowland, has been transformed from an arid

Tennsift River, river in west-central Morocco. The Tennsift River rises from several headstreams in the High Atlas (Haut Atlas) mountains and flows westward for 160 miles (260 km) to the Atlantic Ocean, south of Safi. The Tennsift’s river valley, the Haouz lowland, has been transformed from an arid

Alfred, Lord Tennyson was an English poet often regarded as the chief representative of the Victorian age in poetry. He was raised to the peerage in 1884. Tennyson was the fourth of 12 children, born into an old Lincolnshire family, his father a rector. Alfred, with two of his brothers, Frederick

Alfred, Lord Tennyson was an English poet often regarded as the chief representative of the Victorian age in poetry. He was raised to the peerage in 1884. Tennyson was the fourth of 12 children, born into an old Lincolnshire family, his father a rector. Alfred, with two of his brothers, Frederick

Mexico: The rise of the Aztecs: …also known as Mexica or Tenochca. Tenoch, or Tenochca, was a legendary patriarch who gave his name to Tenochtitlán, the city founded by the Aztecs on an island in Lake Texcoco, in the Valley of Mexico. The name Mexica came to be applied not only to the ancient city of…

Mexico: The rise of the Aztecs: …also known as Mexica or Tenochca. Tenoch, or Tenochca, was a legendary patriarch who gave his name to Tenochtitlán, the city founded by the Aztecs on an island in Lake Texcoco, in the Valley of Mexico. The name Mexica came to be applied not only to the ancient city of…

Aztec, Nahuatl-speaking people who in the 15th and early 16th centuries ruled a large empire in what is now central and southern Mexico. The name Aztec is derived from Aztlán (variously translated as “White Land,” “Land of White Herons,” or “Place of Herons”), an allusion to their origins, probably

Tenochtitlán, ancient capital of the Aztec empire. Located at the site of modern Mexico City, it was founded c. 1325 in the marshes of Lake Texcoco. It formed a confederacy with Texcoco and Tlacopán and was the Aztec capital by the late 15th century. Originally located on two small islands in Lake

Battle of Tenochtitlán, (May 22–August 13, 1521), military engagement between the Aztecs and a coalition of Spanish and indigenous combatants. Spanish conquistadores commanded by Hernán Cortés allied with local tribes to conquer the Aztec capital city of Tenochtitlán. Cortés’s army besieged

mantid: …last species is the familiar Chinese mantid, which is native to many parts of eastern Asia and is the largest mantid in North America, ranging from 7 to 10 cm in length.

mantid: …last species is the familiar Chinese mantid, which is native to many parts of eastern Asia and is the largest mantid in North America, ranging from 7 to 10 cm in length.

AIDS: Condoms, vaccines, gels, and other prevention methods: …formulated to contain 1 percent tenofovir, demonstrated success in early trials. The study involved 889 women in KwaZulu-Natal, South Africa, and indicated that, on average, the gel reduced the risk of HIV infection in women by 39 percent. Women who used the gel regularly experienced a 54 percent reduction in…

sawmill: …be equipped with planing, molding, tenoning, and other machines for finishing processes. The biggest mills are usually situated where timber can be brought by river or rail, and the design of the mill is affected by the mode of transportation. Waterborne logs float into the mill and are dragged out…

tenor, highest male vocal range, normally extending approximately from the second B (B2) below middle C (C4) to the G (G4) above. The range of a tenor, however, may extend slightly lower or higher. An extremely high voice, extending into the alto range, is usually referred to as a countertenor. The

tenor and vehicle, the components of a metaphor, with the tenor referring to the concept, object, or person meant, and the vehicle being the image that carries the weight of the comparison. The words were first used in this sense by the critic I.A. Richards. In the first stanza of Abraham Cowley’s

clef: and as a tenor clef (used by the trombone, cello, and bassoon), in which middle C occurs on the second line from the top:

mellophone, a valved brass musical instrument built in coiled form and pitched in E♭ or F, with a compass from the second A or B below middle C to the second E♭ or F above. The alto and tenor forms substitute for the French horn in marching bands. In the 1950s a version called the mellophonium was

tenor drum, cylindrical drum larger and deeper toned than the closely related snare drum and lacking snares. It is usually about 18 inches (45 cm) in diameter and 14 inches (35 cm) in height and is normally beaten with two soft-headed sticks. The heads are tensioned by rope lacings or metal rods.

tenor horn, brass wind instrument derived from the cornet and the valved bugle, or flügelhorn. A saxhorn of tenor range and a tenor bugle are also sometimes called tenor horns. The tenor horn was used in Prussian cavalry bands by 1829. It has three valves, a cup mouthpiece, and a narrow bore and

Western music: Vocal music in the 16th century: …continuations of earlier practice: the tenor mass, in which the same cantus firmus served for all five portions of the Ordinary of the mass, and the plainsong mass, in which the cantus firmus (usually a corresponding section of plainsong) differed for each portion. Reflecting the more liberal attitudes of the…

sackbut, (from Old French saqueboute: “pull-push”), early trombone, invented in the 15th century, probably in Burgundy. It has thicker walls than the modern trombone, imparting a softer tone, and its bell is narrower. The sackbut answered the need for a lower-pitched trumpet that composers of the

violin: The tenor violin, known from the 16th century through the 18th century, was midway in size between the viola and cello. It was tuned F–c–g–d′. “Tenor violin” also occasionally referred to the viola.

Hugo Weisgall: …of his two one-act works, The Tenor (1950) and The Stronger (1952), that solidified his reputation as a master of the genre. In 1956 Weisgall completed his first full-length opera, Six Characters in Search of an Author, an adaptation of Luigi Pirandello’s play by that name. His next opera, Purgatory…

tenorite, copper oxide mineral (CuO) found as gray-to-black metallic crystals as a sublimation product on lavas. Melaconite, the massive variety, is common as earthy deposits in the oxidized zone of copper lodes. Crystals of tenorite have been identified at Mount Vesuvius and Mount Etna, Italy, and

choral music: Development of the madrigal: …this gradual change, by which Tenorlieder (songs with the tune in the tenor) were transformed into part-songs by the addition of text to the instrumental lines. Some German composers, however, favoured the purely vocal or choral type of performance and made certain that all parts were texted.

occupational disease: Other mechanical stresses: Tenosynovitis, a condition in which the sheath enclosing a tendon to the wrist or to one of the fingers becomes inflamed, causing pain and temporary disability, can also result from prolonged repetitive movement. When the movement involves the rotation of the forearm, the extensor tendon…

bowling, game in which a heavy ball is rolled down a long, narrow lane toward a group of objects known as pins, the aim being to knock down more pins than an opponent. The game is quite different from the sport of bowls, or lawn bowls, in which the aim is to bring the ball to rest near a stationary

tenrec, (family Tenrecidae), any of 29 species of shrewlike and hedgehoglike mammals. Most are endemic to Madagascar and nearby islands, but the otter shrews (subfamily Potamogalinae) are native to the African mainland. The shrewlike tenrecs, such as the long-eared tenrec (Geogale aurita), have

insectivore: Natural history: …moonrat (Echinosorex gymnura) and the tailless tenrec (Tenrec ecaudatus), attain the size of a small rabbit. Most insectivores are either ground dwellers or burrowers, but several are amphibious, and a few have adapted to life in the trees or forest understory. They prey almost entirely on invertebrates and small vertebrates.…

tenrec, (family Tenrecidae), any of 29 species of shrewlike and hedgehoglike mammals. Most are endemic to Madagascar and nearby islands, but the otter shrews (subfamily Potamogalinae) are native to the African mainland. The shrewlike tenrecs, such as the long-eared tenrec (Geogale aurita), have

Francisco José Tenreiro was an African poet writing in Portuguese whose poems express the sufferings caused by colonialist exploitation of the indentured labourers of the island of São Tomé. Tenreiro, the son of a Portuguese administrator and an Angolan woman, spent much of his life in Portugal,

Francisco José Tenreiro was an African poet writing in Portuguese whose poems express the sufferings caused by colonialist exploitation of the indentured labourers of the island of São Tomé. Tenreiro, the son of a Portuguese administrator and an Angolan woman, spent much of his life in Portugal,

Tenri, city, Nara ken (prefecture), Honshu, Japan. It lies in the eastern part of the Nara basin. The area around the city contains many burial mounds and shrines dating from early historic times. Tenri became well-known in 1881, when the headquarters and main temple of Tenrikyō, a Shintō sect,

Tenrikyō, (Japanese: “Religion of Divine Wisdom”), largest and most successful of the modern Shintō sects in Japan. Though founded in the 19th century, it is often considered in connection with the evangelistic “new religions” of contemporary Japan. Tenrikyō originated with Nakayama Miki

celadon, greenish ceramic glaze that is used on stoneware. Celadon is used both for the glaze itself and for the article so glazed. It is particularly valued in China, Korea, Thailand, and Japan. To create this ware, artisans apply a wash of slip (liquefied clay), which contains a high proportion

Tensas River, river of northeastern and eastern Louisiana, U.S. It rises in East Carroll parish, as Tensas Bayou, and generally flows southwestward over a course of approximately 250 miles (400 km), joining the Ouachita River at Jonesville, as the Tensas River, in Catahoula parish to form the Black

Alabama River: to form the Mobile and Tensaw rivers, which flow into Mobile Bay, an arm of the Gulf of Mexico. Mobile and Montgomery became major cities largely because they were on this important traffic artery. The Coosa-Alabama river system, with various locks and dams, has been a major factor in the…

tense, in grammar, a verbal category relating the time of a narrated event to the time of the speech event. In many languages the concept of time is expressed not by the verb but by other parts of speech (temporal adverbials or even nouns, for example). Time is frequently perceived as a continuum

applied logic: Temporal logic: Temporal notions have historically close relationships with logical ones. For example, many early thinkers who did not distinguish logical and natural necessity from each other (e.g., Aristotle) assimilated to each other necessary truth and omnitemporal truth (truth obtaining at all times), as well…

vowel: Tense vowels are articulated with greater muscular effort, slightly higher tongue positions, and longer durations than lax vowels.

Tenshō Kōtai Jingū-kyō, (“Dancing Religion”), one of the “new religions” of Japan that have emerged in the post-World War II period. It was founded by Kitamura Sayo (1900–67), a peasant of Yamaguchi Prefecture, whose charismatic preaching took the form of rhythmic singing and dancing. She had a

Shūbun was a priest-painter who was a key figure in the development of monochromatic ink painting (suiboku-ga) in Japan. His career represents an intermediate stage between the early suiboku-ga artists, who followed their Chinese models quite closely, and the later masters, many of them his pupils,

Japanese architecture: The Azuchi-Momoyama period: …or reinforced tower, called the tenshu, around which were arranged gardens, parks, and fortified buildings used for both official and private purposes. The whole was surrounded by deep moats and massive stone walls. Castle interiors presented a new dimension of decorative challenges. Large, generally dark spaces were subdivided by sliding…

Young’s modulus, numerical constant, named for the 18th-century English physician and physicist Thomas Young, that describes the elastic properties of a solid undergoing tension or compression in only one direction, as in the case of a metal rod that after being stretched or compressed lengthwise

metallurgy: Testing mechanical properties: …mechanical properties are yield stress, elongation, hardness, and toughness. The first two are measured in a tensile test, where a sample is loaded until it begins to undergo plastic strain (i.e., strain that is not recovered when the sample is unloaded). This stress is called the yield stress. It is…

tensile strength, maximum load that a material can support without fracture when being stretched, divided by the original cross-sectional area of the material. Tensile strengths have dimensions of force per unit area and in the English system of measurement are commonly expressed in units of pounds

mechanics of solids: …that plane is called the normal stress. Water at the base of a pond, air in an automobile tire, the stones of a Roman arch, rocks at the base of a mountain, the skin of a pressurized airplane cabin, a stretched rubber band, and the bones of a runner all…

metallurgy: Testing mechanical properties: …two are measured in a tensile test, where a sample is loaded until it begins to undergo plastic strain (i.e., strain that is not recovered when the sample is unloaded). This stress is called the yield stress. It is a property that is the same for various samples of the…

tension, a balance maintained in an artistic work (such as a poem, painting, or musical composition) between opposing forces or elements; a controlled dramatic or dynamic quality. In literature the term has been variously used and defined. The poet and critic Allen Tate used it to refer to the

stress, in psychology and biology, any environmental or physical pressure that elicits a response from an organism. In most cases, stress promotes survival because it forces organisms to adapt to rapidly changing environmental conditions. For example, in response to unusually hot or dry weather,

bridge: Beam: …beam is subjected to horizontal tension. The supports carry the loads from the beam by compression vertically to the foundations.

bridge: In the tension bridge, one end of the string is fastened to a tuning peg or wrest pin and the other to the bridge itself, which is glued to the soundboard (as in the guitar and the lute).

Bradley Walker Tomlin: …created graceful works, such as Tension by Moonlight (1948), that reflect his interest in Japanese calligraphy. He soon regarded such aesthetic freedom with suspicion, however, and began to paint more premeditated pieces, such as Number 9: In Praise of Gertrude Stein (1950), in which calligraphic and typographic shapes form a…

headache: Tension and chronic daily headaches: Episodic tension headaches are by far the most common type of headache. They occur only irregularly and usually do not necessitate a visit to a physician. Pain is usually mild to moderate and is felt on both sides of the head. More than 90 percent of…

pneumothorax: …mediastinal structures, or as a tension pneumothorax, which is a life-threatening condition. Tension pneumothorax can occur as a result of trauma, lung infection, or medical procedures, such as high-pressure mechanical ventilation, chest compression during cardiopulmonary resuscitation (CPR), or thoracoscopy (closed-lung biopsy). In contrast to traumatic pneumothorax and spontaneous pneumothorax, in…

angiosperm: Secondary vascular system: …there is eccentric growth of tension wood on the upper surface; tension wood is a type of reaction wood found in angiosperms that contains gelatinous fibers which shrink and pull.

construction: Steel structures: Tension-cable networks use a mesh of cables stretched from masts or continuous ribs to form a taut surface of negative curvature, such as a saddle or trumpet shape; the network of cables can be replaced by synthetic fabrics to form the tension surface. Another fabric…

The Prophet was a North American Indian religious revivalist of the Shawnee people, who worked with his brother Tecumseh to create a pan-tribal confederacy to resist U.S. encroachment in the Northwest Territory. The Prophet’s declaration in 1805 that he had a message from the “Master of Life,”

tenson, a lyric poem of dispute or personal abuse composed by Provençal troubadours in which two opponents speak alternate stanzas, lines, or groups of lines usually identical in structure. In some cases these debates were imaginary, and both sides of the issue were composed by the same person. The

tenson, a lyric poem of dispute or personal abuse composed by Provençal troubadours in which two opponents speak alternate stanzas, lines, or groups of lines usually identical in structure. In some cases these debates were imaginary, and both sides of the issue were composed by the same person. The

tensor analysis, branch of mathematics concerned with relations or laws that remain valid regardless of the system of coordinates used to specify the quantities. Such relations are called covariant. Tensors were invented as an extension of vectors to formalize the manipulation of geometric entities

human ear: Muscles: The longer muscle, called the tensor tympani, emerges from a bony canal just above the opening of the eustachian tube and runs backward and then outward as it changes direction in passing over a pulleylike projection of bone. The tendon of this muscle is attached to the upper part of…

tent, portable shelter, consisting of a rigid framework covered by some flexible substance. Tents are used for a wide variety of purposes, including recreation, exploration, military encampment, and public gatherings such as circuses, religious services, theatrical performances, and exhibitions of

tent caterpillar moth, (genus Malacosoma), any of a group of moths in the family Lasiocampidae (order Lepidoptera) in which the larvae (caterpillars) spin huge, tent-shaped communal webs in trees, are often brightly coloured, and can defoliate forest, fruit, and ornamental trees. The adults are

Western architecture: Kievan Rus and Russia: …the tiered tower and the tent-shaped roof first developed in wood by Russia’s carpenters. Next was the substitution of the bulb-shaped spire for the traditional Byzantine cupola. This affected the design of masonry architecture by transforming its proportions and decoration and even its structural methods. The buildings acquired a dynamic,…

Jorge Amado: …include Tenda dos milagres (1969; Tent of Miracles), Tiêta do agreste (1977; Tieta, the Goat Girl), Tocaia grande (1984; Show Down), and O sumiço da santa (1993; The War of the Saints). Amado published his memoirs, Navegaçãu de cabotagem (“Coastal Navigation”), in 1992.

needlepoint: …intersection of threads, and the tent stitch, which covers only one. Since the 16th century the most commonly used stitches have been the tent (or continental) stitch, the vertically worked Florentine stitch (also called the flame, bargello, or Hungarian stitch), and the cross-stitch. In the 20th century the basket weave,…

leaf-nosed bat: …some species, such as the tent-making bat (Uroderma bilobatum), have striped faces. American leaf-nosed bats are 4–13.5 cm (1.6–5.3 inches) without the tail, which may be absent or up to 5.5 cm (2.2 inches) long. The largest member of the family is the spectral bat (Vampyrum spectrum), sometimes called a…

chemoreception: Specialized chemosensory structures: …sensilla are often borne on tentacles.

tentacle worm, (Thelepus), any of a genus of tube-dwelling segmented worms of the class Polychaeta (phylum Annelida). They are sedentary forms that remain fixed to the sea bottom except as larvae. T. cincinnatus, 5 to 10 centimetres (about 2 to 4 inches) long and pale red, has lacelike markings on

tentacle worm, (Thelepus), any of a genus of tube-dwelling segmented worms of the class Polychaeta (phylum Annelida). They are sedentary forms that remain fixed to the sea bottom except as larvae. T. cincinnatus, 5 to 10 centimetres (about 2 to 4 inches) long and pale red, has lacelike markings on