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16-letter words containing p, o, i, r

  • photoelectricity — electricity induced by electromagnetic radiation, as in certain processes, as the photoelectric and photovoltaic effects, photoconductivity, and photoionization.
  • photolithography — the technique or art of making photolithographs.
  • photoperiodicity — the response, as affecting growth or reproduction, of an organism to the length of exposure to light in a 24-hour period.
  • photopolarimeter — a polarimeter that uses a photocell.
  • photorespiration — the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis.
  • photozincography — a type of photoengraving using a sensitized zinc plate.
  • phytoremediation — a process of decontaminating soil or water by using plants and trees to absorb or break down pollutants.
  • phytosuccivorous — feeding on sap, as certain sucking insects.
  • picture moulding — the edge around a framed picture
  • picture postcard — postcard (def 1).
  • piezoelectricity — electricity, or electric polarity, produced by the piezoelectric effect.
  • pilot production — sth produced on a trial basis
  • pincers movement — a military maneuver in which both flanks of an enemy force are attacked with the aim of attaining complete encirclement.
  • pinot chardonnay — Chardonnay.
  • 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
  • plaster of paris — calcined gypsum in white, powdery form, used as a base for gypsum plasters, as an additive of lime plasters, and as a material for making fine and ornamental casts: characterized by its ability to set rapidly when mixed with water.
  • pneumatic trough — a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.
  • pocket billiards — pool2 (def 1).
  • point de hongrie — flame stitch.
  • 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)
  • polar opposition — the relation between a pair of antonyms that denote relatively higher and lower degrees of a quality with respect to an explicit or implicit norm rather than absolute values, as the relation between tall and short or light and dark, but not between true and false.
  • polarizing angle — the law that light will receive maximum polarization from a reflecting surface when it is incident to the surface at an angle (angle of polarization or polarizing angle) having a tangent equal to the index of refraction of the surface.
  • police inspector — rank of police officer in the UK
  • polyacrylic acid — a polymer of acrylic acid used as a sizing agent in the manufacture of nylon and other synthetic textiles.
  • polyphonic prose — prose characterized by the use of poetic devices, as alliteration, assonance, rhyme, etc., and especially by an emphasis on rhythm not strictly metered.
  • polyvinyl formal — a colorless, water-insoluble, polyvinyl acetal produced from partially hydrolyzed polyvinyl acetate and formaldehyde, used chiefly in the manufacture of lacquers.
  • ponderosa (pine) — a yellow pine (Pinus ponderosa) of W North America, valued for its timber
  • poor white trash — white trash.
  • porcelain enamel — a glass coating, made to adhere to a metal or another enamel by fusion.
  • pork scratchings — small pieces of crisply cooked pork crackling, eaten cold as an appetizer with drinks
  • port authorities — the body with overall responsibility for a port
  • port phillip bay — a bay in SE Australia: the harbor of Melbourne. 31 miles (50 km) long; 25 miles (40 km) wide.
  • portable airtime — (communications, wireless)   A wireless, digital communications system enabling user-to-user voice communication, "quicknotes", and alphanumeric messaging.
  • portfolio worker — a person in portfolio employment
  • portrait gallery — a gallery where pictures are displayed
  • portrait painter — artist: paints likenesses
  • portuguese india — a former Portuguese overseas territory on the W coast of India, consisting of the districts of Gôa, Daman, and Diu: annexed by India December 1961. Capital: Gôa.
  • portuguese timor — former (1914-75) Portuguese territory in the Malay Archipelago
  • posigrade rocket — an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
  • possession order — (in Britain) a court order that entitles a landlord legally to evict a tenant or squatter and regain possession of the property
  • post-reformation — the act of reforming; state of being reformed.
  • 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.
  • post-romanticism — romantic spirit or tendency.
  • postremogeniture — a system of inheritance under which the estate of a deceased person goes to his youngest son. Also called ultimogeniture. Compare primogeniture (def 2).
  • postscript point — (unit, text)   The variant of the point used by Postscript, equal to 0.3527777778 mm, or 1/72 inch.
  • potential energy — the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system.
  • pourriture noble — noble rot.
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