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

  • educationally — pertaining to education.
  • educationists — Plural form of educationist.
  • effortfulness — (psychology) subjective experience of exertion or effort involved in performing an activity.
  • egregiousness — The quality of being egregious.
  • eigenfunction — Each of a set of independent functions that are the solutions to a given differential equation.
  • 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.
  • 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.
  • encouragement — The action of giving someone support, confidence, or hope.
  • encouragingly — In an encouraging manner.
  • encrustations — Plural form of encrustation.
  • enculturation — The gradual acquisition of the characteristics and norms of a culture or group by a person, another culture, etc.
  • end of medium — (character)   (EM) ASCII character 25.
  • endeavourment — the act of endeavouring
  • endonucleases — Plural form of endonuclease.
  • enteroviruses — Plural form of enterovirus.
  • entomophagous — feeding mainly on insects; insectivorous
  • entomophilous — (of flowering plants) pollinated by insects
  • equilibration — The formation, or maintenance, of an equilibrium.
  • equinoctially — In an equinoctial manner; relative to the equinox.
  • equipartition — the equal division of the energy of a system in thermal equilibrium between different degrees of freedom. This principle was assumed to be exact in classical physics, but quantum theory shows that it is true only in certain special cases
  • equipollently — With equal power.
  • equiponderant — of the same weight; evenly balanced
  • equiponderate — To counterbalance.
  • equipotential — (of a surface or line ) composed of points all at the same potential.
  • equivocalness — The state of being equivocal; ambiguity.
  • equivocations — Plural form of equivocation.
  • erroneousness — The state of being in error; the quality of being erroneous.
  • eta reduction — eta conversion
  • 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,
  • eudaemonistic — Of or pertaining to eudaemonism.
  • 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
  • eureka moment — a moment at which a person realizes or solves something
  • eurocommunism — the policies, doctrines, and practices of Communist Parties in Western Europe in the 1970s and 1980s, esp those rejecting democratic centralism and favouring nonalignment with the Soviet Union and China
  • 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
  • european toad — a European toad, Alytes obstetricans, the male of which carries the fertilized eggs on its hind legs until they hatch: family Discoglossidae
  • european wasp — a large black-and-yellow banded wasp, Vespula germanica, native to Europe, North Africa, and Asia, now established in Australasia and the US
  • eusporangiate — (of ferns) having each sporangium developing from a group of cells, rather than a single cell, and with no specialized dispersal of spores
  • euthanisation — Alternative spelling of euthanization.
  • euthanization — The act or process of euthanizing.
  • exanthematous — Of or pertaining to exanthem.
  • exclusionists — Plural form of exclusionist.
  • excommunicate — Officially exclude (someone) from participation in the sacraments and services of the Christian Church.
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