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13-letter words containing r, c, n

  • documentarist — Movies, Television. a filmmaker, producer, etc., who specializes in documentaries.
  • documentarize — to put in the form of a documentary
  • dodecahedrane — (organic compound) One of the Platonic hydrocarbons, C20H20, having the carbon atoms at the vertices of a regular dodecahedron.
  • dodecahedrons — Plural form of dodecahedron.
  • dolichocranic — dolichocephalic.
  • donald cherry — Donald Eugene ("Don") 1936–95, U.S. jazz trumpeter.
  • donor country — a country which provides aid to a developing country
  • downconverter — A device that converts a signal to a lower frequency, especially in television reception.
  • downhill race — a competitive event in which skiers are timed in a downhill run
  • dresden china — porcelain ware produced at Meissen, Germany, near Dresden, after 1710.
  • dressing case — a small piece of luggage for carrying toilet articles, medicine, etc.
  • dressing sack — a woman's dressing gown.
  • drilling crew — The drilling crew are the people who operate a drilling rig.
  • driving chain — a roller chain that transmits power from one toothed wheel to another
  • driving force — impetus
  • dry scrubbing — Dry scrubbing is the removal of solid particles from a gas onto a liquid surface, but with a solid discharge.
  • dryopithecine — (sometimes initial capital letter) an extinct ape of the genus Dryopithecus, known from Old World Miocene fossils.
  • dual controls — If a vehicle used by a driving instructor has dual controls, it has pedals on the passenger's side as well as on the driver's side to allow the driving instructor to brake should the learner try to move off when it is dangerous to do so
  • dual monarchy — the kingdom of Austria-Hungary 1867–1918.
  • dynamic range — the range of signal amplitudes over which an electronic communications channel can operate within acceptable limits of distortion. The range is determined by system noise at the lower end and by the onset of overload at the upper end
  • dysmenorrheic — Of, pertaining to, or experiencing dysmenorrhea.
  • e-recruitment — the practice of using Internet or electronic resources to recruit new employees, as by searching online résumé databases.
  • ear infection — an infection that affects the ear
  • early closing — shop closure at earlier hour
  • earned income — income from wages, salaries, fees, or the like, accruing from labor or services performed by the earner.
  • earth science — any of various sciences, as geography, geology, or meteorology, that deal with the earth, its composition, or any of its changing aspects.
  • east germanic — a branch of the Germanic languages no longer extant, comprising Gothic and probably others of which there are no written records. Abbreviation: EGmc.
  • easter candle — a tall candle, symbolizing Christ, that is sometimes blessed and placed on the gospel side of an altar on Holy Saturday and kept burning until Ascension Day.
  • eccentrically — deviating from the recognized or customary character, practice, etc.; irregular; erratic; peculiar; odd: eccentric conduct; an eccentric person.
  • economic rent — the return on a productive resource, as land or labor, that is greater than the amount necessary to keep the resource producing or on a product in excess of what would have been the return except for some unique factor.
  • economy drive — a campaign by the government or a firm to reduce expenditure and make savings
  • eddy currents — Eddy currents are localized electric currents set up in metal parts not normally meant to carry currents, due to changes in electromagnetic fields.
  • effervescence — to give off bubbles of gas, as fermenting liquors.
  • effervescency — (archaic) effervescence.
  • efflorescence — the state or a period of flowering.
  • egocentricity — The quality of being egocentric.
  • elasmobranchs — Plural form of elasmobranch.
  • eleanor cross — any of the crosses erected at each place where the body of Eleanor of Castile (1246–90, Edward I's Spanish wife) rested between Nottingham (where she died) and London (where she is buried)
  • electioneered — Simple past tense and past participle of electioneer.
  • electioneerer — One who electioneers.
  • electrization — the action of electrifying
  • electrocement — cement that is produced through the addition of lime to molten slag in an electric furnace
  • electrocuting — Present participle of electrocute.
  • electrocution — The accidental death or suicide by electric shock.
  • electrolyzing — Present participle of electrolyze.
  • electromagnet — A soft metal core made into a magnet by the passage of electric current through a coil surrounding it.
  • electron beam — a beam or stream of electrons emitted by a single source that move in the same direction and at the same speed
  • electron lens — a system, such as an arrangement of electrodes or magnets, that produces a field for focusing a beam of electrons
  • electron tube — (electronics)   (Or tube, vacuum tube, UK: valve, electron valve, thermionic valve, firebottle, glassfet) An electronic component consisting of a space exhausted of gas to such an extent that electrons may move about freely, and two or more electrodes with external connections. Nearly all tubes are of the thermionic type where one electrode, called the cathode, is heated, and electrons are emitted from its surface with a small energy (typically a Volt or less). A second electrode, called the anode (plate) will attract the electrons when it is positive with respect to the cathode, allowing current in one direction but not the other. In types which are used for amplification of signals, additional electrodes, called grids, beam-forming electrodes, focussing electrodes and so on according to their purpose, are introduced between cathode and plate and modify the flow of electrons by electrostatic attraction or (usually) repulsion. A voltage change on a grid can control a substantially greater change in that between cathode and anode. Unlike semiconductors, except perhaps for FETs, the movement of electrons is simply a function of electrostatic field within the active region of the tube, and as a consequence of the very low mass of the electron, the currents can be changed quickly. Moreover, there is no limit to the current density in the space, and the electrodes which do dissapate power are usually metal and can be cooled with forced air, water, or other refrigerants. Today these features cause tubes to be the active device of choice when the signals to be amplified are a power levels of more than about 500 watts. The first electronic digital computers used hundreds of vacuum tubes as their active components which, given the reliability of these devices, meant the computers needed frequent repairs to keep them operating. The chief causes of unreliability are the heater used to heat the cathode and the connector into which the tube was plugged. Vacuum tube manufacturers in the US are nearly a thing of the past, with the exception of the special purpose types used in broadcast and image sensing and displays. Eimac, GE, RCA, and the like would probably refer to specific types such as "Beam Power Tetrode" and the like, and rarely use the generic terms. The cathode ray tube is a special purpose type based on these principles which is used for the visual display in television and computers. X-ray tubes are diodes (two element tubes) used at high voltage; a tungsten anode emits the energetic photons when the energetic electrons hit it. Magnetrons use magnetic fields to constrain the electrons; they provide very simple, high power, ultra-high frequency signals for radar, microwave ovens, and the like. Klystrons amplify signals at high power and microwave frequencies.
  • electron volt — a unit of energy equal to that attained by an electron falling unimpeded through a potential difference of one volt; 1.602 × 10-19 joule
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