Ridley Ridley is a fictional villain from the Metroid series video game Media franchise. His appearance is considered similar to that of a skeletal pterodactyl, but upon further examination it resembles a rather thin, bony European dragon. Due to his appearance and affliation with the Space Pirate, some people have come to refer to him as a "space dragon." He also possesses a head-crest like that of a pteranodon instead of the classic twin horns of a dragon, leadin
	Riesling Riesling is a white grape variety and varietal appellation of wines grown historically in Alsace, Austria, Germany, and northern Italy. It is a very old grape, first documented in 1435, in which year the storage inventory of the Counts of Katzenelnbogen lists the purchase of six barrels of riesslingen from a Rsselsheim vintner.
	RIFE RIFE is a full-stack open source Java programming language web application framework with tools and APIs to implement most common web features. Each of its toolkits is usable by itself and together they offer powerful integrated features that boost your productivity. RIFE ensures that every declaration and definition is handled in one place in the code.
	Riff In music, a riff is an ostinato figure: a repeated chord progression, pattern or melody, often played by the rhythm section instruments, that forms the basis or accompaniment of a Rock and roll or jazz composition. David Brackett defines them as, "short melodic phrase," while Richard Middleton defines them as, "short rhythm, melodic, or harmonic figures repeated to form a musical form framework." Though Rikky Rooksby admits that there is no
	Rifle A rifle is a firearm with a stock and a barrel that has a spiral groove or grooves cut into its interior. The rifling produces "lands," areas that make contact with the projectile , imparting spin around an axis corresponding to the orientation of the weapon. When the projectile leaves the barrel, the conservation of angular momentum improves its accuracy and range, in the same way that a properly thrown American football or rugby football ball behaves.
	Rifleman Rifleman is a private soldier in a rifle unit of infantry. Originating with the 16th century handgunners and the 17th century musketeers and streltsy, special units equipped more modernly than the bulk of the pikemen, the rifleman from the 18th century has become the archetypical common soldier.
	Rifling Rifling refers to helix shaped grooves that have been formed into the barrel of a firearm. It is the means by which a firearm imparts a spin to a projectile to gyroscope stabilize it to improve accuracy.
	Rift In geology, a rift is a place where the Earth's Crust and lithosphere are being pulled apart. Typical features are a central linear downdropped geologic fault segment, called a graben, with parallel normal faulting and rift-flank uplifts on either side forming a rift valley.
	Rift valley In geology, a rift valley is a valley created by the formation of a rift. The Great Rift Valley is the most famous of the world's rift valleys. Rift valleys are produced by tensional Plate tectonics forces which occur at divergent plate boundaries. Rift valleys typically appear as a downdropped graben between a pair of fault, or vertical Earth movements.
	Rift Valley fever Rift Valley Fever is a viral zoonosis causing fever. It is spread by the bite of infected mosquitoes. The disease is caused by the RVF virus , a member of the genus Phlebovirus . The disease was first reported among livestock in Kenya around 1915, but the virus was not isolated until 1931.
	Riga Riga , the capital of Latvia, is situated on the Baltic Sea coast on the mouth of the Daugava, at . Riga is the largest city in the Baltic countries and serves as a major cultural, educational, political, financial, commercial and industrial center in the Baltics.
	Rigatoni Rigatoni is a form of tube-shaped pasta. It is larger than penne and ziti. Rigatoni is usually ridged and the tube's end does not terminate at an angle, like penne's does. Rigatoni can be coupled with many different sauces, from creamy to chunky. Consequently, rigatoni is a popular choice for restaurants which choose to stock only one tube-shaped pasta noodle.
	Rigel Rigel is the brightest star in the constellation Orion and the list of brightest stars in the sky, with visual magnitude 0.12. Although it has the Bayer designation "beta", it is almost always brighter than Alpha Orionis . It also has the alternative traditional names Algebar or Elgebar, but these are almost never used.
	Rigging Rigging denotes how a boat is outfitted. For sailing ships, rigging refers to all apparatuses by or through which the force of the wind is transferred to boat in order to propel the boat forward This includes the spars , the sails and the cordage. Rigging is also used to describe how a sport rowing boat is outfitted .
	Right ascension Right ascension is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination. Explanation RA is the celestial equivalent of terrestrial longitude.
	Right fielder A right fielder, abbreviated RF, is the outfielder in baseball who plays defense in right field. Right field is the area of the outfield to the right of a person standing at home plate and facing towards the pitcher's mound. In the numbering system used to record defensive plays, the right fielder is assigned the number 9.
	Right whale Right whales are baleen whales belonging to the family Balaenidae. Three right whale species are recognized in the genus Eubalaena, while the Bowhead Whalealso a right whaleis placed in its own genus, Balaena. Right whales can grow up to 18 metre long and weigh up to 100 tonnes.
	Rill A rill is a narrow and shallow incision into soil resulting from erosion by overland flow that has been focused into a thin thread by soil surface roughness. Rilling, the process of rill formation, is common on agricultural land and unvegetated ground. Some rills will continue to grow, as they are widened and/or deepened by the runoff which flows through them.
	Rima Rima, a.k.a. Rima the Jungle Girl, is a fictional character, a white-haired superhero who starred in the short-lived comic book series Rima the Jungle Girl published by DC Comics in 1974-75 and subsequently made several appearances on the popular Saturday morning cartoon Super Friends in 1977-78.
	Ring finger The ring finger is the fourth digit of the human hand, and the second most ulna finger, located between the middle finger and the little finger. It is also called digitus medicinalis, the fourth finger, digitus annularis, digitus quartus, or digitus IV in anatomy, and the third finger in daily speech.
	Ring Ouzel The Ring Ouzel is a European member of the Thrush family Turdidae. It is the mountain equivalent of the closely-related Blackbird, and breeds in gullies, rocky areas or scree slopes. It breeds in the higher regions of western and central Europe and also in the Caucasus.
	Ring-tailed Lemur The Ring-tailed Lemur is a large prosimian, a lemur belonging to the family Lemuridae. The Ring-tailed Lemur is the only species within the genus Lemur and, like all other lemurs, is found only on the island of Madagascar. Although threatened by habitat destruction and therefore listed as vulnerable by the IUCN Red List, the Ring-tailed Lemur is the most populous lemur in zoos worldwide; they reproduce readily in captivity.
	Ringo Starr Richard Starkey, Order of the British Empire , known by his stage name Ringo Starr, is a popular England musician, singer, and actor, best known as the drummer for The Beatles. Starr is known for his reliable, innovative drumming and unique fills. He was the oldest member of the band, and the last one to join the now familiar "Fab Four" line-up.
	Ringtail The ringtail, is a mammal belonging to the Procyonidae, native to nearctic. It is also known as the ringtail cat or miner's cat, and is sometimes mistakenly called a civet, which is a different species. The ringtail is buffy to dark brown in color with white underparts and a flashy black and white striped tail which is longer than the rest of its body.
	Ringworm Ringworm, also known as Tinea, is a Infectious disease Fungus of the skin. Contrary to its name, ringworm is not caused by a worm. Ringworm is very common, especially among children, and may be spread by skin-to-skin contact, as well as via contact with contaminated items such as hairbrushes.
	Rio de Janeiro Rio de Janeiro Pronunciation International Phonetic Alphabet ) is the name of both a Rio de Janeiro and a city in south-eastern Brazil. The city was the capital of Brazil and of the Portuguese Empire . Commonly known as just Rio , the city is also nicknamed A Cidade Maravilhosa - "The Marvelous City".
	Río de la Plata The Ro de la Plata — which is often referred to in English language as the River Plate, or sometimes as the [La] Plata River — is the estuary formed by the combination of the Uruguay River and the Paran River. It is a funnel-shaped indentation on the southeastern coastline of South America, extending 290 km from the rivers' confluence to the Atlantic Ocean.
	Rio Grande Known as the Rio Grande in the United States and as the Ro Bravo in Mexico, the river, 1,885 mile long, is the fourth longest river in the United States.or=J.C. Kammerer |title=Largest Rivers in the United States |publisher=United States Geological Survey |date=May 1990
	Riot Riots occur when crowds or even small groups of people gather to commit acts of violence usually in reaction to a perceived grievance or out of dissent. Riots have historically speaking occurred due to poor working or quality of life, government oppression, efforts at taxation or conscription, conflicts between races or religions, or even the outcome of a sporting event.
	Riot control Riot control are the measures to Formal social control a riot or to break up a Demonstration.
	Riot gun A Riot gun refers to a type of firearm that is used to fire less than lethal ammunition for the purpose of suppressing riots. Riot guns may be special purpose firearms designed for riot control use, or standard firearms adapted to riot control use with apporpriate ammunition.
	Rip current A rip current is a strong flow of water returning seaward from the shore. It is often mistakenly called a "rip tide" or "riptide", though the occurrence is not related to the tides. Colloquially a rip current is known simply as a rip, or the misnomer undertow.
	Rip Van Winkle Rip Van Winkle is a short story by Washington Irving published in 1819, as well as the name of the story's fictional protagonist. It was part of a collection of stories entitled The Sketch Book of Geoffrey Crayon. The story has become a part of cultural mythology: even for those who have never read the original story, "Rip Van Winkle" means a person who is inexplicably unaware of current events.
	Riparian forest A Riparian forest is a forested area of land adjacent to a body of water such as a river, stream, pond, lake, marshland, estuary, canal, playa or reservoir.
	RIPE Rseaux IP Europens is a forum open to all parties with an interest in the technical development of the Internet in Europe. The RIPE communitys objective is to ensure that the administrative and technical coordination necessary to maintain and develop the Internet continues. The RIPE community interacts via , and
	Ripening Ripening is a process in fruit that causes them to become more edible. In general, fruits become sweetness, less acidity, less green, and softer as they ripen. Stages of a plant's life are influenced by hormones. An important plant hormone involved with ripening is the chemical compound ethylene, a gas created by plants from the amino acid methionine.
	Rise Up "Rise Up" is a pop music recorded by the Canada group Parachute Club on their self-titled 1983 album. It was produced and engineered by Daniel Lanois. It remains Parachute Club's best-known song. An upbeat call for peace, celebration, and "freedom / to love who we please," the song was a national hit in Canada, and was quickly adopted as a gay anthem.
	Risotto Risotto is a traditional Italy dish made with a suitable variety of rice such as Arborio rice, Carnaroli or Vialone Nano. It is one of the most common ways of cooking rice in Italy. It originated in North Italy, specifically Eastern Piedmont and Western Lombardy, where rice paddies are abundant.
	Risqué Risqu? is the third studio album by American R&B band Chic (band), released on Atlantic Records in 1979, the same year that Bernard Edwards and Nile Rodgers wrote and produced Sister Sledge's massively successful We Are Family (album).
	Rite of passage A rite of passage is a ritual that marks a change in a person's social status or sexual status. Rites of passage are often ceremony surrounding events such as childbirth, menarche or other milestones within puberty, coming of age, weddings, menopause, and death.
	Ritonavir Ritonavir, with trade name Norvir®, is an antiretroviral drug from the protease inhibitor class used to treat HIV infection and AIDS. Ritonavir is frequently prescribed as the Protease inhibitor component in HAART because it inhibits the same host enzyme that metabolizes NRTIs and NNRTIs.
	Ritual A ritual is a set of actions, performed mainly for their symbolic value, which is prescribed by a religion or by the traditions of a community. A ritual may be performed at regular intervals, or on specific occasions, or at the discretion of individuals or communities. It may be performed by a single individual, by a group, or by the entire community; in arbitrary places, or in places especially reserved for it; either in public, in private, or before specific people.
	River A river is a large natural waterway. The source of a river may be a lake, a spring , or a collection of small streams, known as source . From their source, all rivers flow downhill, typically terminating in the ocean. The mouth, or lower end, of a river is known as its base level.
	River Aire The River Aire is a river in Yorkshire, England. Part of the river is canalised and is known as the Aire and Calder Navigation. It starts at Aire Head, near Malham, in North Yorkshire and flows through Gargrave and Skipton. After Cononley, the river enters West Yorkshire where it passes through the former industrial areas of Keighley, Bingley, Saltaire and Shipley, West Yorkshire.
	River Birch River Birch is a common small birch native in flood plains or swamps in the eastern United States from New Hampshire west to southern Minnesota, and south to northern Florida and east Texas. It is a small deciduous tree growing to about 25 m tall at most.
	River Cam The River Cam is a tributary of the River Great Ouse in the east of England. The two rivers join to the south of Ely at a place called Pope's Corner. The Great Ouse connects the Cam to England's canal system. In earlier times the Cam was named the Granta. After the name of the Anglo-Saxon town of Grantebrycge had been modified to Cambridge, the river was renamed to match.
	River Lethe River Lethe is located 18 km west of Mount Katmai, Alaska Peninsula, and is the middle branch of Ukak River. The river was named in 1917 by R. F. Griggs, National Geographic Society; suggested by Lethe, the "river of forgetfulness" in the Hades of Greek mythology.
	River Red Gum The River Red Gum is a tree of the genus Eucalyptus. It is a plantation species in many parts of the world but is native to Australia where it is widespread especially beside inland water courses. Oddly, it is named for the Camaldoli monastery near Naples, from where the first specimen came to be described.
	River Severn The River Severn is the longest United Kingdom river, at 354 kilometres long; it rises at an altitude of 610 metres on Plynlimon near Llanidloes, in the Cambrian Mountains, Mid Wales, and it passes through a number of English counties, with the county towns of Shrewsbury, Worcester, England, and Gloucester located on its banks.
	River Thames The Thames is a river flowing through southern England, in its lower reaches flowing through London into the sea. It is one of the major waterways in England.
	River Tyne The River Tyne is a river in England. It is formed by the confluence of two rivers, the North Tyne and the South Tyne. These two rivers converge at Warden Rock near Hexham in Northumberland at a place dubbed the Meeting of the Waters. The North Tyne rises on the Scotland border, north of Kielder Water.
	Rivera Rivera is the capital of the Departments of Uruguay of Rivera Department in Uruguay with a population of 64,426. Rivera is located exactly on the border with Brazil, and with the Brazilian city of Santana do Livramento, right across the border line, just a street away, it forms an international city of 200.000 inhabitants.
	Rivet A rivet is a mechanical fastener consisting of a smooth cylinder shaft with heads on either end, the second one formed in position. The heads are somewhat larger than the diameter of the hole into which the rivet has been inserted. Generally one head is factory formed.
	Riyadh Riyadh is the capital of the kingdom of Saudi Arabia, located in Ar Riyad Province in the Najd region. It is situated in the centre of the Arabian peninsula on a large plateau and is home to over 4,260,000 people . The city lies in Saudi Arabia's 'central corridor' of development along with Buraydah and Al Kharj in the Ar Riyad administrative division.
	RN RN is the code for: *The state of Rio Grande do Norte, Brazil *The IATA code for Air Horizons *Route Nationale , trunk road. RN may stand for: *Registered Nurse *Royal Navy
	RNA Ribonucleic acid is a nucleic acid polymer consisting of nucleotide monomers. RNA nucleotides contain ribose rings and uracil unlike deoxyribonucleic acid , which contains deoxyribose and thymine. It is transcribed from DNA by enzymes called RNA polymerases and further processed by other enzymes.
	Roach clip A roach clip is a clip, or holder, that is attached to a cigarette. Its purpose is to let the smoker smoke the last piece of the cigarette without burning the lips or fingers, and to facilitate passing around the roach without dropping it.
	Road A road is an identifiable route or path between two or more places. Roads are typically smoothed, paved, or otherwise prepared to allow easy travel; though they need not be, and historically many roads were simply recognisable routes without any formal construction or maintenance. In urban areas roads may pass along and be named as streets, serving a dual function as urban space and route.
	Road Hogs For the style of stock car racing, see Road hogs. Road Hogs is the second role-playing game supplement to the After The Bomb setting of the Teenage Mutant Ninja Turtles and Other Strangeness game. It was published by Palladium Books in 1986 and uses the Palladium Megaversal system.
	Road roller A Road roller is an engineering vehicle used to compact soil, gravel, concrete, or asphalt in the construction of road and Foundation. In many parts of the world, road rollers are still known colloquially as steamroller, regardless of their method of propulsion.
	Roadkill Road fauna or roadkill is a non-scientific term describing animals fatally struck by or ridden over by vehicles on roads and freeways.
	Roadster Roadster is the North American term for a frontal mid-engine, rear-wheel drive, 2-seater, open car, traditionally without side windows, so that even with the lightweight convertible top raised the driver and passenger remain exposed to the elements. In modern times, the word is often used to describe a two-seat convertible without fixed window frames, especially a light-weight sports car.
	Roadsters Roadsters is a racing game for the Nintendo 64, PlayStation and Game Boy Color. It was released in 1999.
	Roald Amundsen Roald Engelbregt Gravning Amundsen was a Norway explorer of polar regions. He led the first successful Antarctica expedition to the South Pole between 1910 and 1912. Amundsen was born to a family of Norwegian shipowners and captains in Borge near Fredrikstad.
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	Roast beef Roast beef is a cut of beef which is roasted in an oven. Roast beef is often served within sandwiches and sometimes is used to make hash. In England roast beef is one of the meats traditionally served at Sunday Dinner.
	Roasting Roasting is a cooking method that utilizes dry heat, whether an open flame, oven, or other heat source. Roasting usually causes caramelization of the surface of the food, which is considered a flavor enhancement. Meats and most root vegetables can be roasted.
	Robbery Robbery is the crime of seizing property through violence or intimidation. A perpetrator of a robbery is a robber. Violence is an ingredient of most robberies, and its use sometimes results in the murder of the victim. Robbery is generally an Urban area crime.
	Robe A robe is a loose-fitting outer clothing. A robe is distinguished from a cape or cloak by the fact that it usually has sleeve. The English_language word robe is loanword from French_language, although in French it typically refers to a woman's Skirt_and_dress.
	Robert A. Heinlein Robert Anson Heinlein was one of the most popular, influential, and controversial authors of "Hard science fiction" science fiction. He set a high standard for science and engineering plausibility that few have equaled, and also helped to raise the genre's standards of literary quality.