• Rhoads, Randy (American musician)

    10 Defining Moments of Ozzy Osbourne’s Career: Partnership with Randy Rhoads: ” Randy Rhoads was a classically trained guitarist and a founding member of the California-based metal band Quiet Riot before joining up with Osbourne in time for Blizzard of Ozz. Rhoads’s riffs are all over the tracks “Crazy Train,” “I Don’t Know,” and “Suicide…

  • Rhoda (American television series)

    James L. Brooks: …Show (1970–77) and its spin-offs Rhoda (1974–78) and Lou Grant (1977–82). Brooks’s next success as writer and producer, the sitcom Taxi (1978–83), maintained the narrative focus on interpersonal relationships between friends and coworkers that he had established on his earlier shows. His later television production credits included The Tracey Ullman…

  • Rhodanic Republic (historical territory, France)

    Valais: Napoleon made Valais the independent Rhodanic Republic in 1802 and incorporated it into France as the département of Simplon in 1810. In 1815 Valais entered the Swiss Confederation. Although it took part in the conservative Sonderbund (a Roman Catholic separatist league) in 1845, it did not fight but submitted to…

  • Rhode (Spain)

    Spain: Greeks: …Emporion (Ampurias) and Rhode (Rosas). There was, however, an older Archaic Greek commerce in olive oil, perfumes, fine pottery, bronze jugs, armour, and figurines carried past the Strait of Gibraltar by the Phoenicians. It developed between 800 and 550 bce, peaking sharply from 600 to 550, and was directed…

  • Rhode Island (state, United States)

    Rhode Island, constituent state of the United States of America. It was one of the original 13 states and is one of the six New England states. Rhode Island is bounded to the north and east by Massachusetts, to the south by Rhode Island Sound and Block Island Sound of the Atlantic Ocean, and to the

  • Rhode Island (island, Rhode Island, United States)

    Rhode Island, island, largest in Narragansett Bay, eastern Rhode Island, U.S., occupying an area of 44 square miles (114 square km). Aquidneck is the Indian name for what was later called Rhode Island. The source of the modern name is unclear: it either was given by colonist Roger Williams,

  • Rhode Island Almanac, The (printed by Franklin)

    almanac: Benjamin Franklin’s brother James printed The Rhode Island Almanac in 1728, and Benjamin Franklin (under the nom de plume of Richard Saunders) began his Poor Richard’s almanacs, the most famous of American almanacs, in Philadelphia in 1732. Poor Richard’s, enlivened by Franklin’s shrewd wit and straightforward prose style, remained a…

  • Rhode Island Blues (novel by Weldon)

    Fay Weldon: …novels from this time included Rhode Island Blues (2000), about a woman who explores her family’s past, and Chalcot Crescent (2009), which is set in a world plagued by a never-ending recession. Weldon also wrote several series, including a trilogy about another wealthy family and its servants; the installments were…

  • Rhode Island College (college, Providence, Rhode Island, United States)

    Providence: …Island School of Design (1877), Rhode Island College (established in 1854 as Rhode Island State Normal School), and Providence College (1917, Roman Catholic). The Museum of Art of the Rhode Island School of Design has collections of American decorative arts and European paintings. The Providence Athenaeum (1838) houses a collection…

  • Rhode Island College of Agriculture and Mechanic Arts (university, Kingston, Rhode Island, United States)

    University of Rhode Island, public, coeducational institution of higher learning in Kingston, Rhode Island, U.S. It is a land- and sea-grant institution. The university includes colleges of business administration, engineering, pharmacy, resource development, human science and services, and arts

  • Rhode Island Red (breed of chicken)

    poultry farming: Chickens: …Plymouth Rock, the Wyandotte, the Rhode Island Red, and the New Hampshire, all of which are dual-purpose breeds that are good for both eggs and meat. The Asiatic Brahma, thought to have originated in the United States from birds imported from China, is popular for both its meat and its…

  • Rhode Island School of Design (school, Providence, Rhode Island, United States)

    Rhode Island School of Design, private, coeducational institution of higher learning in Providence, Rhode Island, U.S. The school was founded in 1877 but did not offer its first instruction at the college level until 1932. It is perhaps the foremost fine arts college in the United States. Rhode

  • Rhode Island State College (university, Kingston, Rhode Island, United States)

    University of Rhode Island, public, coeducational institution of higher learning in Kingston, Rhode Island, U.S. It is a land- and sea-grant institution. The university includes colleges of business administration, engineering, pharmacy, resource development, human science and services, and arts

  • Rhode Island T. F. Green International Airport (airport, Warwick, Rhode Island)

    Rhode Island: Transportation: …state’s main air terminal is T.F. Green International Airport in Warwick. In the 1980s the airport itself was substantially enlarged and the terminal renovated, and passenger traffic increased significantly after that. State airports at Smithfield, Newport, Westerly, Block Island, and Quonset also serve general aviation.

  • Rhode Island v. Innis (law case)

    confession: Confession in contemporary U.S. law: …embraced by the court in Rhode Island v. Innis (1980), in which a 6–3 majority held that a contrived conversation between police officers conducted in the presence of a suspect and intended to elicit incriminating statements from him did not constitute an interrogation that would require adherence to Miranda. More…

  • Rhode Island, Battle of (United States history)

    Rhode Island: Revolution and independence: Notable in the Battle of Rhode Island was the distinguished performance of a battalion of African Americans, the first black regiment to fight in America. In October 1779 the British withdrew in order to redeploy their forces in the South, and in July 1780 some 6,000 French troops…

  • Rhode Island, flag of (United States state flag)

    U.S. state flag consisting of a white field (background) featuring the state coat of arms—a yellow anchor and blue ribbon with the motto “Hope,” all surrounded by 13 yellow stars.The Rhode Island legislature adopted an anchor for its colonial seal in 1647, and in 1664 it added the motto “Hope.”

  • Rhode Island, University of (university, Kingston, Rhode Island, United States)

    University of Rhode Island, public, coeducational institution of higher learning in Kingston, Rhode Island, U.S. It is a land- and sea-grant institution. The university includes colleges of business administration, engineering, pharmacy, resource development, human science and services, and arts

  • Rhodes (Greece)

    Rhodes, major city of the island of Rhodes (Modern Greek: Ródos), South Aegean (Nótio Aigaío) periféreia (region), southeastern Greece. The largest urban centre on the island, Rhodes sits on its northeasternmost tip. In Classical history, Rhodes was a maritime power and the site of the Colossus of

  • Rhodes (island, Greece)

    Rhodes, island (nísos), the largest of the Dodecanese (Modern Greek: Dodekánisa) group, southeastern Greece, and the most easterly in the Aegean Sea, separated by the Strait of Marmara from Turkey. It constitutes a dímos (municipality) within the South Aegean (Nótio Aigaío) periféreia (region).

  • Rhodes carpet (rug)

    Mekri carpet, floor covering handwoven in the Turkish town of Mekri (modern Fethiye), noted for its unusual prayer rugs. They are sometimes called Rhodes carpets, even though there is no evidence that carpets were ever made on that island. Mekri carpets are mainly small prayer rugs that have two

  • Rhodes grass (plant)

    windmill grass: Rhodes grass (C. gayana), a tufted perennial native to South Africa, has been introduced into other areas of the world for forage.

  • Rhodes Matopos National Park (park, Zimbabwe)

    Matopo Hills: The Rhodes Matopos National Park was founded in 1902 as an estate with pastoral and arable land leased to private farmers or the government, an extensive experimental farm, and a game park. Accessible by road from Bulawayo, 5.5 miles (8.8 km) north, the national park occupies…

  • Rhodes scholarship (educational grant)

    Rhodes scholarship, educational grant to the University of Oxford established in 1902 by the will of Cecil Rhodes for the purpose of promoting unity among English-speaking nations. The scholarship’s requirements were revised over the years, and by the early 21st century students from all countries

  • Rhodes University (university, Grahamstown, South Africa)

    South Africa: Higher education: …Natal (Pietermaritzburg and Durban) and Rhodes University—admitted a few Black students until 1959, when their ability to do so was restricted by apartheid legislation that they fiercely opposed. The government then established several new institutions (the Universities of the North, Zululand, Western Cape, Durban-Westville, and Vista and the Medical University)…

  • Rhodes, Alexandre de (French missionary)

    Alexandre de Rhodes was a Jesuit missionary who was the first Frenchman to visit Vietnam. De Rhodes was admitted to the Society of Jesus at Rome in 1612 and in 1619 went to Indochina to establish a mission. Allowed to proselytize, he later estimated that he had converted some 6,700 Vietnamese to

  • Rhodes, Cecil (prime minister of Cape Colony)

    Cecil Rhodes was a financier, statesman, and empire builder of British South Africa. He was prime minister of Cape Colony (1890–96) and organizer of the giant diamond-mining company De Beers Consolidated Mines, Ltd. (1888). By his will he established the Rhodes scholarships at Oxford (1902). Rhodes

  • Rhodes, Cecil John (prime minister of Cape Colony)

    Cecil Rhodes was a financier, statesman, and empire builder of British South Africa. He was prime minister of Cape Colony (1890–96) and organizer of the giant diamond-mining company De Beers Consolidated Mines, Ltd. (1888). By his will he established the Rhodes scholarships at Oxford (1902). Rhodes

  • Rhodes, Cody (American professional wrestler)

    Cody Rhodes is an American professional wrestler known for his extensive history in various professional wrestling promotions, his tenacity as a competitor, his persona, and his ability to win over a crowd. He was a founding member and executive vice president of All-Elite Wrestling (AEW) and

  • Rhodes, Colossus of (statue by Chares)

    Colossus of Rhodes, colossal statue of the sun god Helios that stood in the ancient Greek city of Rhodes and was one of the Seven Wonders of the World. The sculptor Chares of Lyndus (another city on the island) created the statue, which commemorated the raising of Demetrius I Poliorcetes’ long

  • Rhodes, Eugene Manlove (American author)

    western: …Bransford of Rainbow Range) by Eugene Manlove Rhodes, a former cowboy and government scout. Andy Adams incorporated many autobiographical incidents in his Log of a Cowboy (1903). By far the best known and one of the most prolific writers of westerns was Zane Grey, an Ohio dentist who became famous…

  • Rhodes, James Ford (American historian)

    James Ford Rhodes was an American businessman and historian, best known for his multivolume investigation of the antebellum, American Civil War, and Reconstruction periods of the United States’ history. Although he was educated at both New York University (1865–66) and the University of Chicago

  • Rhodes, Karl (American baseball player)

    Sadaharu Oh: Randy Bass in 1985, Karl (“Tuffy”) Rhodes in 2001, and Alex Cabrera in 2002, all foreign players, threatened Oh’s record for most home runs (55) in a season in Japanese baseball. And in all three instances the prevailing attitude of Oh and others in Japanese baseball was that foreigners…

  • Rhodes, Lawrence (American ballet director)

    Lawrence Rhodes was an American premier dancer and ballet director. After performing with several companies, among them the Ballet Russe de Monte Carlo, Rhodes joined (1960) the Robert Joffrey Ballet, for which he created many leading roles, including The Acrobat (Incubus) and the male lead in Time

  • Rhodes, Siege of (Ottoman Empire [1522])

    Led by Süleyman the Magnificent, the Siege of Rhodes in June–December 1522 was the second attempt by the Ottoman Empire to defeat the Knights Hospitaller and take control of Rhodes. Control of the Greek island would consolidate Ottoman control of the eastern Mediterranean. Selim I had vastly

  • Rhodes, Stewart (American militia leader)

    Oath Keepers: Stewart Rhodes and the founding of the Oath Keepers: …were founded in 2009 by Stewart Rhodes, a former U.S. Army paratrooper who was honorably discharged after suffering an injury in a training exercise. Rhodes was a 2004 graduate of Yale Law School, and former classmates later recalled that he had demonstrated a particular interest in the Second Amendment. Rhodes…

  • Rhodes, Trevante (American actor)

    Moonlight: …have passed, and Chiron (Trevante Rhodes) is a muscle-bound drug dealer in Atlanta, patterning himself after Juan. His mother wants him to visit her in the drug rehab facility, and Kevin (André Howard), now a short-order cook and waiter in a diner in Miami, reaches out to him in…

  • Rhodes, Tuffy (American baseball player)

    Sadaharu Oh: Randy Bass in 1985, Karl (“Tuffy”) Rhodes in 2001, and Alex Cabrera in 2002, all foreign players, threatened Oh’s record for most home runs (55) in a season in Japanese baseball. And in all three instances the prevailing attitude of Oh and others in Japanese baseball was that foreigners…

  • Rhodes, Wilfred (British cricketer)

    Wilfred Rhodes was an English cricketer who during his career (1898–1930) completed more doubles (1,000 runs and 100 wickets in a single season) than any other player. He appeared in 58 Test (international) matches and played in his last Test competition at the age of 52. Rhodes scored 1,000 runs

  • Rhodes-Livingstone Institute (institution, Africa)

    Godfrey Wilson: …the first director of the Rhodes-Livingstone Institute in Northern Rhodesia (now Zambia). The institute was the first local anthropological research facility to be set up in an African colony. Wilson and his wife, Monica Hunter Wilson, worked as a team in their examination of social conditions resulting from the rapid…

  • Rhodesia (region, south-central Africa)

    Rhodesia, region, south-central Africa, now divided into Zimbabwe in the south and Zambia in the north. Named after British colonial administrator Cecil Rhodes, it was administered by the British South Africa Company in the 19th century and exploited mostly for its gold, copper, and coal deposits.

  • Rhodesia

    Zimbabwe, landlocked country of southern Africa. It shares a 125-mile (200-kilometre) border on the south with the Republic of South Africa and is bounded on the southwest and west by Botswana, on the north by Zambia, and on the northeast and east by Mozambique. The capital is Harare (formerly

  • Rhodesia and Nyasaland, Federation of (political unit)

    Federation of Rhodesia and Nyasaland, political unit created in 1953 and ended on Dec. 31, 1963, that embraced the British settler-dominated colony of Southern Rhodesia (Zimbabwe) and the territories of Northern Rhodesia (Zambia) and Nyasaland (Malaŵi), which were under the control of the British

  • Rhodesian Front (political party, Zimbabwe)

    Ian Smith: …in Parliament, Smith founded the Rhodesian Front (1961) and attracted white-supremacist support. Promising independence from Britain with a government based upon the white minority, his party won a surprise victory in the election of 1962.

  • Rhodesian man (anthropology)

    Kabwe cranium, fossilized skull of an extinct human species (genus Homo) found near the town of Kabwe, Zambia (formerly Broken Hill, Northern Rhodesia), in 1921. It was the first discovered remains of premodern Homo in Africa and until the early 1970s was considered to be 30,000 to 40,000 years

  • Rhodesian red water fever (livestock disease)

    theileriasis: The most serious is East Coast fever of cattle, caused by T. parva; it has 90–100 percent mortality in Africa. Tropical theileriasis, from T. annulata (T. dispar), is a milder disease of cattle along the Mediterranean and in the Middle East. Theileriases of sheep and goats are mild diseases…

  • Rhodesian Ridgeback (breed of dog)

    Rhodesian Ridgeback, South African hound dog breed characterized by a narrow band of hair that grows forward along its back, against the direction of the rest of the coat. This ridge is inherited from a half-wild native hunting dog that, by breeding with various European dogs, formed the stock that

  • Rhodesian sleeping sickness (pathology)

    trypanosomiasis: East African, or Rhodesian, sleeping sickness is an acute form of the disease caused by the subspecies T. brucei rhodesiense. West African, or Gambian, trypanosomiasis is a slower-developing chronic form of the disease caused by T. brucei gambiense. Both organisms can eventually invade the brain,…

  • Rhodesian teak (plant)

    Zambezi River: Plant life: …the source of the valuable Rhodesian teak (Baikiaea plurijuga). Destruction of the Baikiaea forest results in a regression from forest to grassland, a slow process involving intermediate stages of scrub vegetation. The river additionally has a distinct fringing vegetation, mainly riverine forest including ebony (Diospyros mespiliformis) and small shrubs and…

  • Rhodeus (fish)

    bitterling, (Rhodeus), any of several small, carplike fish of the family Cyprinidae noted for their unusual manner of breeding. Native to clear, stony streams of central and southern Europe, the bitterling is a silvery fish of little economic value, about 5 to 7.5 centimetres (2 to 3 inches) long.

  • Rhodian Sea Law (Byzantine law)

    Rhodian Sea Law, body of regulations governing commercial trade and navigation in the Byzantine Empire beginning in the 7th century; it influenced the maritime law of the medieval Italian cities. The Rhodian Sea Law was based on a statute in the Digest of the Code of Justinian commissioned in the

  • Rhodian ware (pottery)

    Islamic arts: Other arts: …Ottoman schools of pottery: İznik, Rhodian, and Damascus ware. Both in technique and in design, Ottoman ceramics are the only major examples of pottery produced in the late Islamic period.

  • rhodinal (chemical compound)

    isoprenoid: Monoterpenes: …citronellol and the corresponding aldehyde citronellal, both of which occur in oil of citronella, as well as citral, found in lemongrass oil, and geraniol, which occurs in Turkish geranium oil.

  • Rhodinocichla rosea (bird)

    tanager: The thrush-tanager (Rhodinocichla rosea), found in lowlands from Mexico to Venezuela, may deserve family rank (Rhodinocichlidae). The swallow-tanager is of another subfamily entirely.

  • rhodinol (chemical compound)

    isoprenoid: Monoterpenes: …derivatives include the terpene alcohol citronellol and the corresponding aldehyde citronellal, both of which occur in oil of citronella, as well as citral, found in lemongrass oil, and geraniol, which occurs in Turkish geranium oil.

  • rhodium (chemical element)

    rhodium (Rh), chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table, predominantly used as an alloying agent to harden platinum. Rhodium is a precious, silver-white metal, with a high reflectivity for light. It is not corroded or tarnished by

  • Rhodium Group (American research company)

    Paris Agreement: After ratification: The Rhodium Group noted that U.S. emissions had increased 3.4 percent in 2018. The Global Carbon Project (GCP) reported that carbon emissions worldwide, which were largely flat from 2014 to 2016, had increased by 1.6 percent and by 2.7 percent in 2017 and 2018, respectively. The…

  • rhodizite (mineral)

    cesium: crust in the minerals pollucite, rhodizite, and lepidolite. Pollucite (Cs4Al4Si9O26∙H2O) is a cesium-rich mineral resembling quartz. It contains 40.1 percent cesium on a pure basis, and impure samples are ordinarily separated by hand-sorting methods to greater than 25 percent cesium. Large pollucite deposits have been found in Zimbabwe and in…

  • Rhodnius (insect genus)

    excretion: The malpighian tubules of insects: …demonstrated in the case of Rhodnius, a bloodsucking bug. Immediately after the ingestion of a blood meal there is a rapid flow of urine whereby most of the water taken in with the blood meal is eliminated. The distension of the body after ingestion is the stimulus that causes certain…

  • Rhodnius prolixus (insect)

    Rhodnius prolixus, parasitic species of South American assassin bug that is one of the primary vectors of the protozoan parasite Trypanosoma cruzi, which causes Chagas disease in humans, dogs, and other mammals. The insect, like other members of the kissing bug subfamily Triatominae, feeds on

  • Rhodobryum roseum (plant, Rhodobryum roseum)

    rose moss, (Rhodobryum roseum; formerly Bryum roseum), moss of the subclass Bryidae, found throughout most of the world in woods or sheltered grassy places. Rose moss seldom forms sporophytes and capsules (spore cases); it reproduces primarily by stolons (horizontal stems that root at the nodes).

  • rhodochrosite (mineral)

    rhodochrosite, mineral, composed of manganese carbonate (MnCO3), that is a source of manganese for the ferromanganese alloys used in steel production. It is commonly found in ore veins formed at moderate temperatures, in high-temperature metamorphic deposits, and in sedimentary deposits. Notable

  • rhododendron (plant)

    rhododendron, (genus Rhododendron), diverse genus of about 1,000 species of woody flowering plants in the heath family, notable for their attractive flowers and handsome foliage. Rhododendrons are native chiefly in the north temperate zone, especially in the moist acidic soil of the Himalayas and

  • Rhododendron (plant)

    rhododendron, (genus Rhododendron), diverse genus of about 1,000 species of woody flowering plants in the heath family, notable for their attractive flowers and handsome foliage. Rhododendrons are native chiefly in the north temperate zone, especially in the moist acidic soil of the Himalayas and

  • Rhododendron arborescens (plant)

    azalea: Major species: …North American kinds include the smooth, or sweet, azalea (R. arborescens), a fragrant white-flowering shrub 3 to 6 metres (about 10 to 20 feet) high; the flame azalea (R. calendulaceum), a shrub 0.5 to 2 metres (1.5 to 6.5 feet) high; and the pinxter flower (R. periclymenoides), a shrub 1…

  • Rhododendron arboreum (plant)

    rhododendron: Physical description: …such as tree rhododendron (R. arboreum), bearded rhododendron (R. barbatum), and the critically endangered big tree rhododendron (R. protistum variety giganteum) from Asia, some in excess of 12 meters (40 feet) high. Leaves are thick and leathery and are evergreen in all but the azalea species, some of which

  • Rhododendron barbatum (plant)

    rhododendron: Physical description: arboreum), bearded rhododendron (R. barbatum), and the critically endangered big tree rhododendron (R. protistum variety giganteum) from Asia, some in excess of 12 meters (40 feet) high. Leaves are thick and leathery and are evergreen in all but the azalea species, some of which are deciduous.…

  • Rhododendron calendulaceum (plant)

    azalea: Major species: …to 20 feet) high; the flame azalea (R. calendulaceum), a shrub 0.5 to 2 metres (1.5 to 6.5 feet) high; and the pinxter flower (R. periclymenoides), a shrub 1 to 2 metres (3 to 6.5 feet) high, with pink to whitish flowers. Hundreds of horticultural forms have been bred, including…

  • Rhododendron canadense (plant)

    rhodora, (Rhododendron canadense), deciduous shrub of the heath family (Ericaceae), native to northeastern North America. It occurs most commonly in swampy regions and grows to about 90 cm (3 feet) in height. The plant has alternate, oval or oblong, smooth-edged leaves about 3.75–5 cm (1.5–2

  • Rhododendron catawbiense (plant)

    rhododendron: Major species: The catawba rhododendron, or mountain rosebay (R. catawbiense), of the southeastern United States, is plentiful and a great flowering attraction in June in Great Smoky Mountains National Park. The hardy catawba hybrids are derived from R. catawbiense and allied species. The great laurel rhododendron, or rosebay…

  • Rhododendron columbianum (plant)

    Labrador tea: …Rocky Mountain region, known as western Labrador tea (R. columbianum). Both plants are used to make tea and in traditional medicine but can be toxic.

  • Rhododendron groenlandicum (plant)

    Labrador tea: Bog Labrador tea (R. groenlandicum) is found in cold boggy areas and grows to about 1 metre (3 feet) high. The fragrant leaves have long been used by native peoples for tea and are also used in traditional herbal medicines. The twigs are reddish. The…

  • Rhododendron hirsutum (plant)

    rhododendron: Major species: …in the mid-1600s, was the hairy alpine rose (R. hirsutum), which may grow as high as 1 meter (3 feet). Large-leaved species (and their hybrids) from the Himalayan region have long been popular ornamental plants in temperate areas without extreme winter cold. A number of species known as azaleas were…

  • Rhododendron kaempferi (plant)

    azalea: Major species: yedoense), and the torch azalea (R. kaempferi).

  • Rhododendron maximum (plant)

    rhododendron: Major species: The great laurel rhododendron, or rosebay rhododendron (R. maximum), overlapping in distribution with the catawba, ranges more northeasterly; it is often grown as an ornamental. Both can be small trees, up to 6 meters (20 feet) or taller. Rhodora (R. canadense), from northeastern North America, bears…

  • Rhododendron molle (plant)

    azalea: Major species: …have been bred, including the molle azalea (R. molle), the Yodogawa azalea (R. yedoense), and the torch azalea (R. kaempferi).

  • Rhododendron periclymenoides (plant)

    azalea: Major species: 5 feet) high; and the pinxter flower (R. periclymenoides), a shrub 1 to 2 metres (3 to 6.5 feet) high, with pink to whitish flowers. Hundreds of horticultural forms have been bred, including the molle azalea (R. molle), the Yodogawa azalea (R. yedoense), and the torch azalea (R. kaempferi).

  • Rhododendron ponticum (plant)

    rhododendron: Major species: In the British Isles, common rhododendron (R. ponticum) has become an invasive species. Introduced in the late 18th century from Spain, Portugal, and, to a lesser extent, Turkey, this rhododendron forms impenetrable thickets in which virtually nothing else grows.

  • Rhododendron prostratum (plant)

    rhododendron: Physical description: …(4 inches) high, such as prostrate rhododendron (R. prostratum) from Yunnan, China, while others are trees, such as tree rhododendron (R. arboreum), bearded rhododendron (R. barbatum), and the critically endangered big tree rhododendron (R. protistum variety giganteum) from

  • Rhododendron protistum variety giganteum (plant)

    rhododendron: Physical description: and the critically endangered big tree rhododendron (R. protistum variety giganteum) from Asia, some in excess of 12 meters (40 feet) high. Leaves are thick and leathery and are evergreen in all but the azalea species, some of which are deciduous. Flowers may be scented or not and are…

  • Rhododendron tomentosum (plant)

    Labrador tea: Marsh Labrador tea (R. tomentosum) is circumpolar and also native to eastern North America. The name is also sometimes applied to a closely related shrub of the Rocky Mountain region, known as western Labrador tea (R. columbianum). Both plants are used to make tea and…

  • Rhododendron yedoense (plant)

    azalea: Major species: molle), the Yodogawa azalea (R. yedoense), and the torch azalea (R. kaempferi).

  • rhodolite (gemstone)

    rhodolite, pink or rose-red variety of pyrope (q.v.), a garnet

  • rhodonite (mineral)

    rhodonite, silicate mineral that occurs as rounded crystals, masses, or grains in various manganese ores, often with rhodochrosite. It is found in the Ural Mountains of Russia, where it is mined for ornamental uses, and in Sweden, New South Wales, California, and New Jersey. Rhodonite, a manganese,

  • Rhodope (ancient province, Greece)

    Greece: Late Roman administration: …were divided into eight provinces: Rhodope, Macedonia, Epirus (Ípeiros) Nova, Epirus Vetus, Thessaly (Thessalía), Achaea, Crete (Kríti), and the Islands (Insulae). Of the eight

  • Rhodope Mountains (mountains, Europe)

    Rhodope Mountains, mountain system in the Balkan Peninsula. The Rhodope Mountains lie mainly in Bulgaria but also reach into Greece. The least-accessible region in the Balkans, it has within Bulgaria an area of 5,690 square miles (14,737 sq km), extending 150 miles (240 km) west to east and 60

  • Rhodophyta (division of algae)

    red algae, (division Rhodophyta), any of about 6,000 species of predominantly marine algae, often found attached to other shore plants. Their morphological range includes filamentous, branched, feathered, and sheetlike thalli. The taxonomy of the group is contentious, and organization of the

  • rhodophyte (division of algae)

    red algae, (division Rhodophyta), any of about 6,000 species of predominantly marine algae, often found attached to other shore plants. Their morphological range includes filamentous, branched, feathered, and sheetlike thalli. The taxonomy of the group is contentious, and organization of the

  • rhodopsin (biochemistry)

    rhodopsin, pigment-containing sensory protein that converts light into an electrical signal. Rhodopsin is found in a wide range of organisms, from vertebrates to bacteria. In many seeing animals, including humans, it is required for vision in dim light and is located in the retina of the

  • rhodora (plant)

    rhodora, (Rhododendron canadense), deciduous shrub of the heath family (Ericaceae), native to northeastern North America. It occurs most commonly in swampy regions and grows to about 90 cm (3 feet) in height. The plant has alternate, oval or oblong, smooth-edged leaves about 3.75–5 cm (1.5–2

  • Rhodostethia rosea (bird)

    gull: Ross’s gull (Rhodostethia rosea) is an attractive pinkish white bird that breeds in northern Siberia and wanders widely over the Arctic Ocean. Abounding in the Arctic, Sabine’s gull (Xema sabini) has a forked tail and a habit of running and picking up food like a…

  • Rhodri Mawr (king of Gwynedd)

    Carmarthenshire: The strong reign of Rhodri Mawr (c. 870) is said to have brought a measure of peace, and his grandson Howel the Good (Hywel Dda) was the first to codify the ancient laws of Wales at his palace, Ty-Gwyn-ar-Dâf (near modern Whitland). After 1080 the Normans entered the area,…

  • Rhodymenia (genus of red algae)

    algae: Annotated classification: Porphyra, and Rhodymenia. Division Dinoflagellata (Pyrrophyta) Taxonomy is contentious. Predominantly unicellular flagellates; approximately half of the species are heterotrophic rather than photosynthetic; photosynthetic forms with chlorophyll a, one or more chlorophyllide c types, and peridinin or fucoxanthin; mitochondria with

  • Rhodymenia palmata (red algae)

    dulse, (Palmaria palmata), edible red alga (Rhodophyta) found along the rocky northern coasts of the Atlantic and Pacific oceans. Dulse can be eaten fresh or dried. In traditional dishes, it is boiled with milk and rye flour or made into a relish and is commonly served with fish and butter. The

  • Rhoeo (Greek mythology)

    Anius: …the god Apollo and of Rhoeo, who was herself a descendant of the god Dionysus. Rhoeo, when pregnant, had been placed in a chest and cast into the sea by her father; floating to the island of Delos, the birthplace of Apollo, she gave birth to Anius, who became a…

  • Rhoeo discolor (plant)

    Commelinales: …plant; and Tradescantia spathacea, or Moses-in-the-cradle, grown as a potted plant for its purple-coloured leaves and unusual flowers.

  • Rhoipteleaceae (plant family)

    Fagales: Rhoipteleaceae: Rhoipteleaceae contains one genus with one species, Rhoiptelea chiliantha (horsetail tree), which is restricted to Vietnam and southern China. It has superior ovaries and inflorescences with flowers in triads (the central one apparently bisexual).

  • Rhoma Irama (Indonesian musician)

    Rhoma Irama is an Indonesian popular musician who was in large part responsible for the creation of dangdut dance music, a blend of Indonesian, Indian, Middle Eastern, and Western styles that amassed a tremendous following in Indonesia in the late 20th century. Born to a lower-middle-class family

  • rhombencephalon (anatomy)

    hindbrain, region of the developing vertebrate brain that is composed of the medulla oblongata, the pons, and the cerebellum. The hindbrain coordinates functions that are fundamental to survival, including respiratory rhythm, motor activity, sleep, and wakefulness. It is one of the three major

  • rhombi (mathematics)

    rhombus, a four-sided, or quadrilateral, geometric figure in which all four sides are of the same length and each of the two pairs of opposite sides are parallel to each other. A rhombus is an equilateral parallelogram. The word rhombus comes from the Greek rhombos, meaning “a spinning top” or “a