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16-letter words containing o, a, p, e, c

  • perchloromethane — carbon tetrachloride.
  • peregrine falcon — a globally distributed falcon, Falco peregrinus, much used in falconry because of its swift flight: several subspecies are endangered.
  • perforated ulcer — an ulcer that bursts through the stomach wall and leaks food and gastric juices into the abdominal cavity
  • performance bond — contract bond.
  • performance test — a test requiring little or no use of language, the test materials being designed to elicit manual or behavioral responses rather than verbal ones.
  • periodic decimal — repeating decimal.
  • periodic tenancy — the letting of a dwelling for a repeated short term, as by the week, month, or quarter, with no end date
  • personal effects — belongings
  • personality cult — deliberately cultivated adulation of a person, esp a political leader
  • personnel agency — an agency for placing employable persons in jobs; employment agency.
  • peter pan collar — a close-fitting flat or rolled collar with rounded ends that meet in front of a high, round neckline.
  • phagocytic index — the average number of bacteria ingested per phagocyte in an incubated mixture of bacteria, phagocytes, and blood serum: used in determining the opsonic index.
  • pharmacogenetics — the branch of pharmacology that examines the relation of genetic factors to variations in response to drugs.
  • pharmacogenomics — the study of human genetic variability in relation to drug action and its application to medical treatment
  • pharmacokinetics — the branch of pharmacology that studies the fate of pharmacological substances in the body, as their absorption, distribution, metabolism, and elimination.
  • phase microscope — a microscope that utilizes the phase differences of light rays transmitted by different portions of an object to create an image in which the details of the object are distinct despite their near-uniformity of refractive index.
  • phenomenological — the study of phenomena.
  • pheochromocytoma — a tumor of the sympathetic nervous system or adrenal medulla, that produces excess norepinephrine and epinephrine and causes hypertension, headaches, nausea, etc.
  • phylogenetically — the development or evolution of a particular group of organisms.
  • pico de sao tome — an island in the Gulf of Guinea, off the W coast of Gabon, just N of the equator: the larger component of the Democratic Republic of São Tomé and Príncipe. 318 sq. mi. (824 sq. km).
  • picture postcard — postcard (def 1).
  • piece d'occasion — something prepared or used for a special occasion.
  • pitch-cone angle — (in a bevel gear) the apex angle of the truncated cone (pitch cone) which forms the reference surface on which the teeth of a bevel gear are cut
  • pithecanthropine — of, belonging to, or resembling a former genus (Pithecanthropus, now classified as Homo erectus) of extinct early humans, who lived in Java, China, Europe, and Africa
  • pithecanthropoid — of, relating to, or resembling the former genus Pithecanthropus or one of its members.
  • place of worship — religious house: church, temple
  • placement office — an office in a university that offers students careers advice and help to find employment
  • plainclothes man — a detective or police officer who wears civilian clothes while on duty
  • platform-balance — a scale with a platform for holding the items to be weighed.
  • play one's cards — to carry out one's plans; take action (esp in the phrase play one's cards right)
  • pneumatic trough — a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.
  • pneumonic plague — a form of plague characterized by lung involvement.
  • pocket billiards — pool2 (def 1).
  • pocket secretary — a long, narrow walletlike case, usually of leather and containing pockets for credit and business cards, paper money, etc., and sometimes a notepad and pencil.
  • poisoned chalice — If you refer to a job or an opportunity as a poisoned chalice, you mean that it seems to be very attractive but you believe it will lead to failure.
  • poitou-charentes — a region of W central France, on the Bay of Biscay: mainly low-lying
  • polar coordinate — Usually, polar coordinates. one of two coordinates used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
  • police constable — police officer
  • policy statement — a declaration of the plans and intentions of an organization or government
  • political system — a coordinated set of principles, laws, ideas, and procedures relating to a particular form of government, or the form of government itself: Democracy is a political system in which citizens govern themselves.
  • polycondensation — formation of a polymer by chemical condensation with the elimination of a small molecule, such as water.
  • polyvinyl acetal — any of the class of thermoplastic resins derived by the condensation of an aldehyde with polyvinyl alcohol.
  • porcelain enamel — a glass coating, made to adhere to a metal or another enamel by fusion.
  • posigrade rocket — an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
  • post-renaissance — the activity, spirit, or time of the great revival of art, literature, and learning in Europe beginning in the 14th century and extending to the 17th century, marking the transition from the medieval to the modern world.
  • postencephalitic — inflammation of the substance of the brain.
  • powerpc platform — (architecture, standard)   (PPCP, PReP - PowerPC Reference Platform, formerly CHRP - Common Hardware Reference Platform) An open system standard, designed by IBM, intended to ensure compatibility among PowerPC-based systems built by different companies. The PReP standard specifies the PCI bus, but will also support ISA, MicroChannel and PCMCIA. PReP-compliant systems will be able to run the Macintosh OS, OS/2, WorkplaceOS, AIX, Solaris, Taligent and Windows NT. IBM systems will (of course) be PReP-compliant. Apple's first PowerPC Macintoshes will not be compliant, but future ones may be.
  • practical reason — (in Kantian ethics) reason applied to the problem of action and choice, especially in ethical matters.
  • practice session — a period of training that takes place over a set period of time, for example an hour or several hours
  • pragmatic theory — the theory of truth that the truth of a statement consists in its practical consequences, especially in its agreement with subsequent experience.
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