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13-letter words containing c, o, u, l

  • double-clutch — (of a bird) to produce a second clutch of eggs after the first has been removed, usually for hatching in an incubator.
  • double-decker — something with two decks, tiers, or the like, as two beds one above the other, a ship with two decks above the water line, or a bus with two decks.
  • double-nickel — the national speed limit of 55 miles per hour as established in 1974 on U.S. highways.
  • douglas scale — an international scale of sea disturbance and swell ranging from 0 to 9 with one figure for disturbance and one for swell
  • 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.
  • ducking stool — a former instrument of punishment consisting of a chair in which an offender was tied to be plunged into water.
  • duplicitously — In a duplicitous, two-faced manner.
  • dysfunctional — not performing normally, as an organ or structure of the body; malfunctioning.
  • educationally — pertaining to education.
  • efficaciously — capable of having the desired result or effect; effective as a means, measure, remedy, etc.: The medicine is efficacious in stopping a cough.
  • electrocuting — Present participle of electrocute.
  • electrocution — The accidental death or suicide by electric shock.
  • 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.
  • electrophorus — A device for repeatedly generating static electricity by induction.
  • encapsulation — The act of enclosing in a capsule; the growth of a membrane around (any part) so as to enclose it in a capsule.
  • encourageable — Able to be encouraged; suggestible.
  • encouragingly — In an encouraging manner.
  • enculturation — The gradual acquisition of the characteristics and norms of a culture or group by a person, another culture, etc.
  • endonucleases — Plural form of endonuclease.
  • equimolecular — (chemistry) Containing the same number of molecules (of two or more compounds).
  • equinoctially — In an equinoctial manner; relative to the equinox.
  • equivocalness — The state of being equivocal; ambiguity.
  • estrous cycle — the regular female reproductive cycle of most placental mammals that is under hormonal control and includes a period of heat, followed by ovulation and complex changes of the uterine lining
  • ethnocultural — Relating to or denoting a particular ethnic group.
  • eudicotyledon — any plant belonging to one of the two major groups of flowering plants, comprising over 60 per cent of all plants, normally having net-veined leaves and two cotyledons in the seed
  • eugeosyncline — a geosyncline characterized by lithology typical of deep ocean environments
  • exclusionists — Plural form of exclusionist.
  • faculty board — the governing body of a faculty
  • false colours — a flag to which one is not entitled, flown esp in order to deceive
  • fasciculation — a fascicular condition.
  • federal court — a court of a federal government, especially one established under the Constitution of the United States.
  • fibromuscular — (anatomy) Of or pertaining to both fibrous and muscular tissue.
  • fibrovascular — composed of fibrous and conductive tissue, as in the vascular systems of higher plants: a fibrovascular bundle.
  • flag of truce — a white flag displayed as an invitation to the enemy to confer, or carried as a sign of peaceful intention by one sent to deal with the enemy.
  • floatcut file — file with rows of parallel teeth
  • floor cushion — a cushion placed on the floor of a room for people to sit on
  • floor furnace — a small self-contained furnace placed just below the floor of the space to be heated.
  • floricultural — Of or pertaining to floriculture.
  • floutingstock — a laughing-stock; the object of mockery or flouting
  • flow function — The flow function is the relationship between the strength of a compact and the degree of compaction.
  • fluctuational — Of, pertaining to, or resulting from fluctuation(s).
  • fluorescently — In a fluorescent manner; using fluorescence.
  • fluoroacetate — a toxic chemical compound, C2H2FNaO2, occurring naturally in certain plants, and commonly used as rat poison
  • fluorocarbons — Plural form of fluorocarbon.
  • fluorochromes — Plural form of fluorochrome.
  • fluorographic — of or pertaining to fluorography
  • fluoroplastic — any of the plastics, as Teflon, in which hydrogen atoms of the hydrocarbon chains are replaced by fluorine atoms.
  • fluoroscoping — Present participle of fluoroscope.
  • fluoroscopist — One who carries out fluoroscopy.
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