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

  • effortfulness — (psychology) subjective experience of exertion or effort involved in performing an activity.
  • 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.
  • eleventh hour — If someone does something at the eleventh hour, they do it at the last possible moment.
  • 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.
  • entomophilous — (of flowering plants) pollinated by insects
  • equilibration — The formation, or maintenance, of an equilibrium.
  • equilibratory — Relating to the physical sense of balance, or equilibrium.
  • equimolecular — (chemistry) Containing the same number of molecules (of two or more compounds).
  • equinoctially — In an equinoctial manner; relative to the equinox.
  • equipollently — With equal power.
  • equipotential — (of a surface or line ) composed of points all at the same potential.
  • 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.
  • ethnolinguist — a person who studies ethnolinguistics
  • ethnophaulism — An ethnic or racial slur, typically caricaturing some identifiable (often physical) feature of the group being derided. For example,
  • 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
  • european plan — a hotel rate of charging covering room and service but not meals
  • european sole — Solea solea, a tongue-shaped flatfish of the family Soleidae, also known as Dover sole or common sole: prefers shallow waters and is highly valued as a food fish
  • exclusionists — Plural form of exclusionist.
  • expeditiously — In an expeditious manner.
  • exploratorium — A museum or similar institution that encourages visitors to explore the exhibits in a hands-on manner.
  • expostulating — Present participle of expostulate.
  • expostulation — (countable) The act of reasoning earnestly in order to dissuade or remonstrate.
  • expostulatory — Of, characterized by, or exhibiting expostulation.
  • false colours — a flag to which one is not entitled, flown esp in order to deceive
  • fare-you-well — a state of perfection: The meal was done to a fare-thee-well.
  • farm labourer — a person engaged in physical work on a farm
  • federal court — a court of a federal government, especially one established under the Constitution of the United States.
  • feloniousness — The quality of being felonious.
  • felony murder — a killing treated as a murder because, though unintended, it occurred during the commission or attempted commission of a felony, as robbery.
  • ferroaluminum — a ferroalloy containing up to 80 percent aluminum.
  • feudalization — to make feudal; bring under the feudal system.
  • feuilletonism — The light, entertaining writing style associated with feuilletons.
  • feuilletonist — a part of a European newspaper devoted to light literature, fiction, criticism, etc.
  • fiddle around — waste time doing sth trivial
  • filibusterous — resembling a filibuster or the actions of a filibuster
  • filipendulous — Suspended by, or strung upon, a thread; said of tuberous swellings in the middle or at the extremities of slender, threadlike rootlets.
  • 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.
  • flannel-mouth — a person whose speech is thick, slow, or halting.
  • floatcut file — file with rows of parallel teeth
  • floor furnace — a small self-contained furnace placed just below the floor of the space to be heated.
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