13-letter words containing c, o, n, e
- double-nickel — the national speed limit of 55 miles per hour as established in 1974 on U.S. highways.
- 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
- driving force — impetus
- dryopithecine — (sometimes initial capital letter) an extinct ape of the genus Dryopithecus, known from Old World Miocene fossils.
- dynamic scope — (language) In a dynamically scoped language, e.g. most versions of Lisp, an identifier can be referred to, not only in the block where it is declared, but also in any function or procedure called from within that block, even if the called procedure is declared outside the block. This can be implemented as a simple stack of (identifier, value) pairs, accessed by searching down from the top of stack for the most recent instance of a given identifier. The opposite is lexical scope. A common implementation of dynamic scope is shallow binding.
- dysmenorrheic — Of, pertaining to, or experiencing dysmenorrhea.
- 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.
- echo question — a question uttered by a listener that in effect repeats a speaker's sentence, replacing an unclear or doubted portion of the sentence with a stressed interrogative word, as You said WHAT to John? or He WHAT?
- echo sounding — the determining of depth of water by means of a device (echo sounder) that measures the time required for a sound wave to be reflected from the bottom: a similar process (echo ranging) is used to measure the distance to an underwater object
- eco-labelling — the practice or system of using eco-labels
- ecomanagement — any of various ways to lessen the harmful impact of human activity on the environment.
- economic good — a commodity or service that can be utilized to satisfy human wants and that has exchange value.
- 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.
- economization — The act or practice of using resources to the best effect.
- economy class — a low-priced type of accommodation for travel, especially on an airplane.
- economy drive — a campaign by the government or a firm to reduce expenditure and make savings
- ectocommensal — Biology. (of an organism) living in a commensal relationship on the exterior of another organism.
- ectosymbionts — Plural form of ectosymbiont.
- edison effect — the phenomenon of the flow of electric current when an electrode sealed inside the bulb of an incandescent lamp is connected to the positive terminal of the lamp.
- educationally — pertaining to education.
- educationists — Plural form of educationist.
- efflorescence — the state or a period of flowering.
- egocentricity — The quality of being egocentric.
- egomaniacally — In an egomaniacal manner.
- eigenfunction — Each of a set of independent functions that are the solutions to a given differential equation.
- ejection seat — a seat, esp as fitted to military aircraft, that is fired by a cartridge or rocket to eject the occupant from the aircraft in an emergency
- 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
- electrophones — Plural form of electrophone.
- electrophonic — Relating to electronic equipment to produce sound (this adjectival sense is not comparable).
- electrostrong — (physics) describing the combination of the electromagnetic and strong nuclear forces.
- electrotyping — The act or process of making electrotypes.
- electrovalent — (of bonding) resulting from electrostatic attraction between positive and negative ions; ionic.
- emancipations — Plural form of emancipation.
- embryogenetic — embryogenic