19-letter words containing o, p, e, n
- development company — a company that buys land and builds houses, offices, shops, or factories on it, or buys existing buildings and makes them more modern
- diffraction pattern — the phenomenon exhibited by wave fronts that, passing the edge of an opaque body, are modulated, thereby causing a redistribution of energy within the front: it is detectable in light waves by the presence of a pattern of closely spaced dark and light bands (diffraction pattern) at the edge of a shadow.
- dihydrostreptomycin — an antibiotic, C 21 H 41 N 7 O 12 , derived by organic synthesis from and believed to be less toxic than streptomycin: used in the form of its sulfate chiefly in the treatment of tuberculosis.
- dimetric projection — a type of axonometric projection in which the object is shown with two of its three principal axes tilted equally from the plane of viewing
- direct-vision prism — Amici prism.
- directional coupler — (communications) (tap) A passive device used in cable systems to divide and combine radio frequency signals. A directional coupler has at least three ports: line in, line out, and the tap. The signal passes between line in and line out ports with loss referred to as the insertion loss. A small portion of the signal power applied to the line in port passes to the tap port. A signal applied to the tap port is passed to the line in port less the tap attenuation value. The tap signals are isolated from the line out port to prevent reflections. A signal applied to the line out port passes to the line in port and is isolated from the tap port. Some devices provide more than one tap output line (multi-taps).
- disambiguation page — a page on a website that lists various websites or web pages that have or could have the same title. The user is able to select from the list that page, site etc that he or she actually wants
- disjunctive pronoun — an inflection of pronouns in some languages that is used alone or after a preposition, such as moi in French
- dispersion relation — the relationship between the angular frequency (ω;) of a wave and the magnitude of its wave vector (k). Thus the wave's speed is ω/k
- diversional therapy — the structured use of leisure time in recreation and play as a form of or supplement to conventional therapy
- dobsonian telescope — a relatively inexpensive Newtonian telescope, suitable for visual but not photographic use, in which the tube assembly slips freely in the lower base.
- dose-response curve — a curve plotting the relationship between the dose of a drug administered and its pharmacological effect.
- double counterpoint — invertible counterpoint using two transposable voices.
- echoencephalography — a device that employs reflected ultrasonic waves to examine the position of brain structures.
- electrode potential — the potential difference developed when an electrode of an element is placed in a solution containing ions of that element
- electron micrograph — a photograph or image of a specimen taken using an electron microscope
- electron microscope — An electron microscope is a type of very powerful microscope that uses electrons instead of light to produce a magnified image of something.
- electron multiplier — a device for amplifying and measuring a flux of electrons. Each electron hits an anode surface and releases secondary electrons that are accelerated to a second surface; after several such stages a measurable pulse of current is obtained
- electronic graphics — (on television) the production of graphic designs and text by electronic means
- emergency telephone — a public telephone intended for use in emergencies: for example, at the side of a motorway
- employment tribunal — (in England, Scotland, and Wales) a tribunal that rules on disputes between employers and employees regarding unfair dismissal, redundancy, etc
- empty-nest syndrome — a condition, often involving depression, loneliness, etc, experienced by parents living in a home from which the children have grown up and left
- english toy spaniel — breed of dog
- entitlement program — a government program providing defined sectors of the population with social benefits
- equal opportunities — Equal opportunities refers to the policy of giving everyone the same opportunities for employment, pay and promotion, without discriminating against particular groups.
- european commission — the executive body of the European Union formed in 1967, which initiates action in the EU and mediates between member governments
- european parliament — law: assembly in Strasbourg
- evaporative cooling — a method of reducing temperature that uses evaporation
- exclusion principle — Pauli exclusion principle
- expeditionary force — An expeditionary force is a group of soldiers who are sent to fight in a foreign country.
- expressionistically — In an expressionistic manner.
- extendible compiler — (language) (ETC) A Fortran-like compiler that can be extended with macros.
- extreme programming — a discipline of software engineering following a specific structure, designed to simplify and speed up the development process
- family practitioner — medical specialization in general practice, requiring training beyond that of general practice and leading to board certification.
- female impersonator — a male performer who dresses as and impersonates women.
- fighter-interceptor — a fighter plane used for the defense of a region against air attack, especially by attacking bombers.
- finger on the pulse — If you have your finger on the pulse of something, you know all the latest opinions or developments concerning it.
- first person plural — a grammatical category of pronouns and verbs used by the speaker to refer to or talk about himself together with others
- flowering raspberry — a shrub, Rubus ordoratus, of eastern North America, having loose clusters of showy purplish or rose-purple flowers and inedible, dry, red fruit.
- focal plane shutter — an opaque shield in a camera, lying in the focal plane of the lens, that, when tripped, admits light to expose the film or plate for a predetermined period, usually a fraction of a second
- focal-plane shutter — a camera shutter situated directly in front of the film.
- follow-up interview — a second interview following an initial interview
- forensic psychiatry — the use of psychiatric knowledge and techniques in questions of law, as in determining legal insanity.
- four eyes principle — the requirement that a business transaction be approved by at least two individuals
- fractal compression — (algorithm) A technique for encoding images using fractals.
- free alongside ship — (of a shipment of goods) delivered to the dock without charge to the buyer, but excluding the cost of loading onto the vessel
- freezer compartment — in a refrigerator, an enclosed area kept at a temperature low enough to store frozen foods or freeze non-frozen foods
- front-end processor — a small computer or other dedicated device that performs preliminary processing of data for a host computer.
- gallipoli peninsula — peninsula in S European Turkey, forming the NW shore of the Dardanelles: c. 55 mi (89 km) long
- general post office — (in the U.S. postal system) the main post office of a city, county, etc., that also has branch post offices. Abbreviation: G.P.O., GPO.