Glossary · Nouns · R
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TermTypeDefinitionClassificationsUpdated
Railway LinenounMWEline that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freightverified
Railway LocomotivenounMWEa wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracksverified
Railway SystemnounMWEline that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freightverified
Railway YardnounMWEan area having a network of railway tracks and sidings for storage and maintenance of cars and enginesverified
Railyardnounan area having a network of railway tracks and sidings for storage and maintenance of cars and enginesverified
Rain ChecknounMWEa ticket stub entitling the holder to admission to a future event if the scheduled event was cancelled due to rainverified
Rain DatenounMWEan alternative date set for some outdoor event in case it rains on the appointed dateverified
Rain ShadownounMWEan area that has little precipitation because some barrier causes the winds to lose their moisture before reaching itverified
Rain SticknounMWEa percussion instrument that is made from a dried cactus branch that is hollowed out and filled with small pebbles and capped at both endsverified
Rain TreenounMWElarge ornamental tropical American tree with bipinnate leaves and globose clusters of flowers with crimson stamens and seed pods that are eaten by cattleverified
Rainbownounan arc of colored light in the sky caused by refraction of the sun's rays by rainverified
Rainbow CactusnounMWEa stout cylindrical cactus of the southwest United States and adjacent Mexicoverified
Rainbow ShowernounMWEdeciduous ornamental hybrid of southeastern Asia and Hawaii having racemes of flowers ranging in color from cream-colored to orange and redverified
Rainbow SmeltnounMWEimportant marine and landlocked food fish of eastern North America and Alaskaverified
Rainbow TroutnounMWEfound in Pacific coastal waters and streams from lower California to Alaskaverified
Rainflynounflap consisting of a piece of canvas that can be drawn back to provide entrance to a tentverified
Rainmakernounexecutive who is very successful in bringing in business to his company or firmverified
Ralenouna rapid series of short loud sounds (as might be heard with a stethoscope in some types of respiratory disorders)verified
Rallying PointnounMWEa point or principle on which scattered or opposing groups can come togetherverified
Ram's HornnounMWEannual of southern United States to Mexico having large whitish or yellowish flowers mottled with purple and a long curving beakverified
Ram's-Headnounorchid of northern North America having a brownish-green flower and red-and-white lip suggestive of a ram's headverified
Ram's-Head Lady's SlippernounMWEorchid of northern North America having a brownish-green flower and red-and-white lip suggestive of a ram's headverified
Ramekinnouna cheese dish made with egg and bread crumbs that is baked and served in individual fireproof dishesverified
Ramequinnouna cheese dish made with egg and bread crumbs that is baked and served in individual fireproof dishesverified
Ramiprilnounan ACE inhibitor (trade name Altace) used to treat high blood pressure or in some patients who have had a heart attackverified
Ramontchinounsmall shrubby tree of Madagascar cultivated in tropical regions as a hedge plant and for its deep red acid fruits resembling small plumsverified
Rampionnounbellflower of Europe and Asia and North Africa having bluish flowers and an edible tuberous root used with the leaves in saladverified
Rampion BellflowernounMWEbellflower of Europe and Asia and North Africa having bluish flowers and an edible tuberous root used with the leaves in saladverified
Ranalian ComplexnounMWEa group of families of trees and shrubs and herbs having well-developed perianths and apocarpous ovaries and generally regarded as the most primitive extant flowering plantsverified
Random Bit GeneratornounMWEA device or algorithm that outputs a sequence of binary bits that appears to be statistically independent and unbiased. An RBG is either a DRBG or an NRBG.Capability
Random MemorynounMWEthe most common computer memory which can be used by programs to perform necessary tasks while the computer is onverified
Random Number GeneratornounMWERandom Number Generators (RNGs) used for cryptographic applications typically produce a sequence of zero and one bits that may be combined into sub-sequences or blocks of random numbers. There are two basic classes: deterministic and nondeterministic. A deterministic RNG consists of an algorithm that produces a sequence of bits from an initial value called a seed. A nondeterministic RNG produces output that is dependent on some unpredictable physical source that is outside human control.Capability