Glossary · MWE Terms · R
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TermTypeDefinitionClassificationsUpdated
Ratchet ScrewdrivernounMWEa screwdriver with a ratchet (so the blade turns in only one direction) and a spiral in the handle (so the blade rotates) with downward pressure on the handleverified
Rate of ExchangenounMWEthe charge for exchanging currency of one country for currency of anotherverified
Rate of InflationnounMWEthe rate of change of prices (as indicated by a price index) calculated on a monthly or annual basisverified
Rate of ReturnnounMWEthe amount returned per unit of time expressed as a percentage of the costverified
Ratite BirdnounMWEflightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostrichesverified
Rattail CactusnounMWEcommonly cultivated tropical American cactus having slender creeping stems and very large showy crimson flowers that bloom for several daysverified
Rattan CanenounMWEthe stem of various climbing palms of the genus Calamus and related genera used to make wickerwork and furniture and canesverified
Rattan PalmnounMWEclimbing palm of Sri Lanka and southern India remarkable for the great length of the stems which are used for malacca canesverified
Rattlesnake MasternounMWEcoarse prickly perennial eryngo of United States thought to cure rattlesnake biteverified
Rattlesnake OrchidnounMWEany of various orchids of the genus Pholidota having numerous white to brown flowers in spiraling racemes clothed in slightly inflated bracts and resembling a rattlesnake's tailverified
Rattlesnake PlantainnounMWEany of several small temperate and tropical orchids having mottled or striped leaves and spikes of small yellowish-white flowers in a twisted racemeverified
Ray FloretnounMWEsmall flower with a flat strap-shaped corolla usually occupying the peripheral rings of a composite flowerverified
Ray FlowernounMWEsmall flower with a flat strap-shaped corolla usually occupying the peripheral rings of a composite flowerverified
Rayless ChamomilenounMWEannual aromatic weed of Pacific coastal areas (United States and northeastern Asia) having bristle-pointed leaves and rayless yellow flowersverified
Razor FishnounMWEany of several small wrasses with compressed sharp-edged heads of the West Indies and Mediterraneanverified
Razor-Billed AuknounMWEblack-and-white northern Atlantic auk having a compressed sharp-edged billverified
Reacquired StocknounMWEstock that has been bought back by the issuing corporation and is available for retirement or resaleverified
Reaction EnginenounMWEa jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed streamverified
Reaction FormationnounMWEin psychiatry, a defense mechanism in which a person unconsciously develops attitudes and behavior that are the opposite of unacceptable repressed desires and impulses and serve to conceal themverified
Reaction PropulsionnounMWEpropulsion that results from the ejection at high velocity of a mass of gas to which the vehicle reacts with an equal and opposite momentumverified
Reaction TurbinenounMWEa turbine with blades arranged to develop torque from gradual decrease of steam pressure from inlet to exhaustverified
Reaction-Propulsion EnginenounMWEa jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed streamverified
Reactive DepressionnounMWEan inappropriate state of depression that is precipitated by events in the person's life (to be distinguished from normal grief)verified
Read-Only MemorynounMWE(computer science) memory whose contents can be accessed and read but cannot be changedverified
Read-Only StoragenounMWE(computer science) memory whose contents can be accessed and read but cannot be changedverified
Read/write HeadnounMWE(computer science) a tiny electromagnetic coil and metal pole used to write and read magnetic patterns on a diskverified
Read/write MemorynounMWEthe most common computer memory which can be used by programs to perform necessary tasks while the computer is onverified
Reading DesknounMWEdesk or stand with a slanted top used to hold a text at the proper height for a lecturerverified