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18-letter words containing l, e, v, r

  • psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
  • quality of service — (communications, networking)   (QoS) The performance properties of a network service, possibly including throughput, transit delay, priority. Some protocols allow packets or streams to include QoS requirements.
  • quarter-wave plate — a crystal thin enough to cause a phase difference of 90° between the ordinary and extraordinary rays of polarized light, thereby converting circularly polarized light into plane polarized light.
  • rabbit-foot clover — a plant, Trifolium arvense, having trifoliate leaves with narrow leaflets and fuzzy, cylindrical, grayish-pink flower heads.
  • racially motivated — motivated by (the hate or prejudice of) someone's race
  • redevelopment area — an urban area in which all or most of the buildings are demolished and rebuilt
  • reinvent the wheel — (jargon)   To design or implement a tool equivalent to an existing one or part of one, with the implication that doing so is silly or a waste of time. This is often a valid criticism. On the other hand, automobiles don't use wooden rollers, and some kinds of wheel have to be reinvented many times before you get them right. On the third hand, people reinventing the wheel do tend to come up with the moral equivalent of a trapezoid with an offset axle.
  • relative frequency — the ratio of the number of times an event occurs to the number of occasions on which it might occur in the same period.
  • relative major key — a major key that has the same key signature as a minor key, but a different tonic
  • relative minor key — a minor key that has the same key signature as a major key, but a different tonic
  • restrictive clause — a relative clause that identifies the antecedent and that is usually not set off by commas in English. In The year that just ended was bad for crops, the clause that just ended is a restrictive clause.
  • reverse angle shot — Movies. reverse shot.
  • reverse psychology — (in nontechnical use) a method of getting another person to do what one wants by pretending not to want it or to want something else or something more.
  • revolution counter — a device for counting or recording the number of revolutions made by a rotating shaft, as of a motor or engine.
  • revolutionary wars — American Revolution.
  • ribbon development — housing or commercial buildings built along a stretch of road.
  • rr lyrae variables — any of the very regular, short-period, pulsating variable stars having periods between 1.5 and 29 hours
  • russian revolution — Also called February Revolution. the uprising in Russia in March, 1917 (February Old Style), in which the Czarist government collapsed and a provisional government was established.
  • sea-level pressure — the atmospheric pressure, at any elevation, reduced by formula to a value approximating the pressure at sea level.
  • seasonal variation — season-related variation
  • selective abortion — the aborting of particular embryos for medical or social reasons
  • selective breeding — the raising of animals with particular genetic traits through careful choice of parents
  • self-advertisement — a paid announcement, as of goods for sale, in newspapers or magazines, on radio or television, etc.
  • set priority level — (SPL) The way traditional Unix kernels implement mutual exclusion by running code at high interrupt priority levels and thus blocking lower level interrupts.
  • silver certificate — a former paper currency first issued in 1878 by the U.S. federal government for circulation, equal to and redeemable for silver to a stated value.
  • silvery cinquefoil — any of several plants belonging to the genus Potentilla, of the rose family, having yellow, red, or white five-petaled flowers, as P. reptans (creeping cinquefoil) of the Old World, or P. argentea (silvery cinquefoil) of North America.
  • silvery spleenwort — a fern, Diplazium pycnocarpon, of eastern North America, having fronds from 20 to 30 inches (50.8 to 76.2 cm) long on yellowish-green stalks.
  • social environment — the environment developed by humans as contrasted with the natural environment; society as a whole, especially in its relation to the individual.
  • solvent extraction — Solvent extraction is the separation of a particular substance from a mixture by dissolving that substance in a solvent that will dissolve it, but which will not dissolve any other substance in the mixture.
  • special relativity — the state or fact of being relative.
  • split-level cooker — a cooker that is designed with a separate oven and hob so that they can be fitted wherever is most convenient in the kitchen
  • st. lawrence river — a river in SE Canada, flowing NE from Lake Ontario, forming part of the boundary between New York and Ontario, and emptying into the Gulf of St. Lawrence. 760 miles (1225 km) long.
  • store launch event — A store launch event is a special event, which publicizes the opening of a new store and at which discounts and free samples may be offered.
  • super royal octavo — a book size, 63⁄4 by 101⁄4 inches
  • survival mechanism — something you or your body does automatically, in order to survive in a dangerous or unpleasant situation
  • sweet vernal grass — a Eurasian meadow grass, Anthoxanthum odoratum, found throughout North America, having clusters of brownish-green flowers.
  • teacher evaluation — the process of vetting teachers to maintain teaching standards
  • technical reserves — Technical reserves are amounts of money set aside to pay for underwriting liabilities.
  • telephone receiver — a device, as in a telephone, that converts changes in an electric current into sound.
  • tender loving care — considerate and kindly care, as of someone who is ill, upset, etc
  • theodore roosevelt — (Anna) Eleanor, 1884–1962, U.S. diplomat, author, and lecturer (wife of Franklin Delano Roosevelt).
  • thermogalvanometer — a thermoammeter for measuring small currents, consisting of a thermocouple connected to a direct-current galvanometer.
  • to lose your nerve — If you lose your nerve, you suddenly panic and become too afraid to do something that you were about to do.
  • to play favourites — to display favouritism
  • to scrape a living — If you say that someone scrapes a living or scratches a living, you mean that they manage to earn enough to live on, but it is very difficult. In American English, you say they scrape out a living or scratch out a living.
  • too clever by half — If someone is too clever by half, they are very clever and they show their cleverness in a way that annoys other people.
  • traveling salesman — a male representative of a business firm who travels in an assigned territory soliciting orders for a company's products or services.
  • traveller's cheque — Traveller's cheques are cheques that you buy at a bank and take with you when you travel, for example so that you can exchange them for the currency of the country that you are in.
  • travelling library — a mobile library in which a vehicle such as a van delivers books to be borrowed
  • tristimulus values — three values that together are used to describe a colour and are the amounts of three reference colours that can be mixed to give the same visual sensation as the colour considered
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