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17-letter words containing a, r, e, n

  • operating theatre — An operating theatre is a special room in a hospital where surgeons carry out medical operations.
  • operation sealion — the codename for Hitler's proposed invasion (1940) of Great Britain
  • operations centre — a centre where activities of a business, organization, etc, are administrated and take place
  • opisthobranchiate — (zoology) Of or pertaining to the Opisthobranchiata.
  • optical carrier n — (networking)   (OC-n) A SONET rate of n times 51.84 megabits per second.
  • orange flower oil — neroli oil.
  • orange free state — a province in central Republic of South Africa: a Boer republic 1854–1900; a British colony (Orange River Colony, ) 1900–10. 49,647 sq. mi. (128,586 sq. km). Capital: Bloemfontein.
  • oregon crab apple — a shrub or small tree, Malus fusca, of the rose family, of the northwestern coast of North America, having hairy leaves, white flowers, and yellow or green oblong fruit.
  • organ-pipe cactus — a treelike or columnar cactus, Lemaireocereus marginatus, of Mexico, having a central, erect spine surrounded by spreading spines in clusters of five to eight, and funnel-shaped, brownish-purple flowers.
  • organic chemistry — the branch of chemistry, originally limited to substances found only in living organisms, dealing with the compounds of carbon.
  • organized ferment — ferment (def 1).
  • organized militia — a former military organization functioning under both state and federal authority.
  • osculating circle — circle of curvature.
  • out of all reason — unreasonable
  • outline agreement — a contract, etc, setting out the preliminary terms or guidelines for an agreement; a preliminary agreement
  • over-appreciation — gratitude; thankful recognition: They showed their appreciation by giving him a gold watch.
  • over-compensation — a pronounced striving to neutralize and conceal a strong but unacceptable character trait by substituting for it an opposite trait.
  • over-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
  • overconcentration — the act of concentrating; the state of being concentrated.
  • overdetermination — the concept that a single emotional symptom or event, as a dream or a slip of the tongue, may be caused by more than one factor.
  • overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
  • overreach oneself — to fail because of trying to do more than one can
  • oversquare engine — An oversquare engine is an engine which has a cylinder bore that is larger than its stroke.
  • oyer and terminer — (in some U.S. states) any of various higher criminal courts.
  • pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
  • painted greenling — a greenling, Oxylebius pictus, inhabiting the Pacific coastal waters of North America, having a whitish body marked with black bands.
  • palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
  • paleoanthropology — the study of the origins and predecessors of the present human species, using fossils and other remains.
  • paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
  • palette of narmer — a king of Egypt identified by modern scholars as the Menes of tradition and depicted as the unifier of Upper and Lower Egypt on an ancient slate tablet (Narmer Palette or Palette of Narmer) c3200 b.c. with relief carvings on both sides.
  • pan potentiometer — a control on a stereo sound mixing desk by means of which the relative levels in right- and left-hand channels can be adjusted and hence the apparent position of the recorded or broadcast sound source within the stereo panorama can be controlled
  • parachute payment — a payment made to alleviate hardship resulting from a sudden loss of income
  • paradise regained — an epic poem (1671) by John Milton.
  • parallel universe — Physics. any of a hypothetical collection of undetectable universes that are like our known universe but have branched off from our universe due to a quantum-level event. See also multiverse.
  • parents anonymous — (in Britain) an association of local voluntary self-help groups offering help through an anonymous telephone service to parents who fear they will injure their children, or who have other problems in managing their children
  • parking attendant — a person who works for a traffic control agency and who issues tickets for parking violations
  • parliamentary law — the body of rules, usages, and precedents that governs proceedings of legislative and deliberative assemblies.
  • parmesan (cheese) — a very hard, dry cheese orig. of Italy, made from skimmed cow's milk and usually grated for sprinkling on pasta, soups, etc.
  • particle kinetics — Particle kinetics is the study of the movement of particles and the forces that cause this movement.
  • parts of kesteven — an area in E England constituting a former administrative division of Lincolnshire
  • parts per million — the number of units (of a substance) present in a million units of another substance
  • pascal's triangle — a triangular arrangement of the binomial coefficients of the expansion (x + y) n for positive integral values of n.
  • passenger station — a station used by passengers
  • passenger traffic — number of passengers
  • passive restraint — a safety device, as an air bag or special seat belt, that is activated automatically to protect an automobile passenger at the moment of impact when a collision occurs.
  • pasteur institute — an organization in Paris that was founded in 1887. It does research on micro-organisms and diseases
  • pasteur treatment — Pasteur's method of preventing certain diseases, esp. rabies, by increasing the strength of successive inoculations with a specific weakened or attenuated virus
  • paternalistically — the system, principle, or practice of managing or governing individuals, businesses, nations, etc., in the manner of a father dealing benevolently and often intrusively with his children: The employees objected to the paternalism of the old president.
  • pauline privilege — (in canon law) the privilege given to converts to dissolve a marriage with an unbaptized spouse if either obstructs the religious practices of the other.
  • paymaster general — a government minister responsible for making payments by government departments
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