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

  • downhill race — a competitive event in which skiers are timed in a downhill run
  • downregulates — Third-person singular simple present indicative form of downregulate.
  • drink problem — If someone is said to have a drink problem, they are thought to drink too much alcohol
  • drop the ball — a spherical or approximately spherical body or shape; sphere: He rolled the piece of paper into a ball.
  • drummondville — a city in S Quebec, in E Canada.
  • dry ski slope — A dry ski slope is a slope made of an artificial substance on which you can practise skiing.
  • dun laoghaire — a seaport in E Republic of Ireland, near Dublin.
  • durable goods — Durable goods or durables are goods such as televisions or cars which are expected to last a long time, and are bought infrequently.
  • dysmenorrheal — painful menstruation.
  • dysregulation — A failure to regulate properly.
  • early adopter — a person who uses a new product or technology before it becomes widely known or used.
  • early closing — shop closure at earlier hour
  • early-morning — taking place or being presented in the early part of the morning
  • ebola (virus) — an RNA virus (family Filoviridae) that causes fever, internal bleeding, and, often, death
  • ecclesiolatry — excessive reverence for churchly forms and traditions.
  • editorialists — Plural form of editorialist.
  • editorialized — Simple past tense and past participle of editorialize.
  • editorializer — One who editorializes.
  • editorializes — Third-person singular simple present indicative form of editorialize.
  • edward lorenz — (person)   A mathematical meteorologist who discovered the Lorenz attractor in the 1960s.
  • efflorescence — the state or a period of flowering.
  • effortfulness — (psychology) subjective experience of exertion or effort involved in performing an activity.
  • 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
  • electroactive — (of living tissue) exhibiting electrical activity or responsive to electrical stimuli
  • electrocement — cement that is produced through the addition of lime to molten slag in an electric furnace
  • electrochemic — electrochemical
  • electrocuting — Present participle of electrocute.
  • electrocution — The accidental death or suicide by electric shock.
  • electrocyclic — (organic chemistry) Describing a molecular rearrangement in which a covalent single bond is formed between the ends of a fully conjugated system resulting in a cyclic compound with one fewer double bonds.
  • electrodermal — Of or relating to measurement of the electrical conductivity of the skin, especially as an indicator of someone’s emotional responses.
  • electroformed — Produced, or modified by electroforming.
  • electrographs — Plural form of electrograph.
  • electrologist — A person trained to remove unwanted hair on the body or face or small blemishes on the skin by a method that involves the application of heat using an electric current.
  • 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.
  • electromerism — a type of tautomerism in which the isomers (electromers) differ in the distribution of charge in their molecules
  • electrometers — Plural form of electrometer.
  • electromotive — Producing or tending to produce an electric current.
  • 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
  • electrooptics — the technology that deals with the production, control, and detection of light by electrical devices
  • electrophiles — Plural form of electrophile.
  • electrophilic — (of a molecule or group) having a tendency to attract or acquire electrons.
  • electrophones — Plural form of electrophone.
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