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

  • ploughwright — a person who makes ploughs
  • plumbiferous — yielding or containing lead.
  • plurilocular — possessing many cells
  • pneumotropic — directed toward or having an affinity for lung tissue.
  • pocket drive — a small portable memory device that can be plugged into the USB port of many different types of computer
  • poetastering — the profession of being a poetaster
  • pogson ratio — the brightness ratio of two celestial objects that differ by one magnitude. On the Pogson scale a difference of 5 magnitudes is defined as a difference of 100 in the intensities of two stars; therefore a difference of 1 magnitude is equal to the fifth root of 100, i.e. 2.512
  • poikilotherm — an organism with poikilothermic qualities
  • point charge — an electric charge considered to exist at a single point, and thus having neither area nor volume.
  • point source — a source of radiation sufficiently distant compared to its length and width that it can be considered as a point.
  • point spread — a betting device, established by oddsmakers and used to attract bettors for uneven competitions, indicating the estimated number of points by which a stronger team can be expected to defeat a weaker team, the point spread being added to the weaker team's actual points in the game and this new figure then compared to the stronger team's points to determine winning bets.
  • point-spread — a betting device, established by oddsmakers and used to attract bettors for uneven competitions, indicating the estimated number of points by which a stronger team can be expected to defeat a weaker team, the point spread being added to the weaker team's actual points in the game and this new figure then compared to the stronger team's points to determine winning bets.
  • pointe-noire — a seaport in the S Republic of Congo.
  • pointed arch — an arch having a pointed apex.
  • polar circle — either the Arctic or the Antarctic Circle.
  • polar lights — the aurora borealis in the Northern Hemisphere or the aurora australis in the Southern Hemisphere.
  • polariscopic — relating to a polariscope
  • polarization — a sharp division, as of a population or group, into opposing factions.
  • police court — an inferior court with summary jurisdiction for the trial of persons accused of any of certain minor offenses, and with power to examine those charged with more serious offenses and hold them for trial in a superior court or for a grand jury.
  • police force — police (def 1).
  • police power — the power of a nation, within the limits of its constitution, to regulate the conduct of its citizens in the interest of the common good.
  • policeperson — a member of a police force.
  • policyholder — the individual or firm in whose name an insurance policy is written; an insured.
  • policymakers — a person responsible for making policy, especially in government.
  • poliorcetics — the science of siegecraft
  • politicaster — an ill-suited or disliked politician
  • pollen grain — a single granule of pollen.
  • polyarchical — a form of government in which power is vested in three or more persons.
  • polycentrism — the doctrine that a plurality of independent centers of leadership, power, or ideology may exist within a single political system, especially Communism.
  • polydisperse — of or noting a sol that contains particles of different sizes.
  • polygraphist — an instrument for receiving and recording simultaneously tracings of variations in certain body activities.
  • polyhedrosis — an often fatal disease of certain insect larvae or decapod crustaceans, caused by viruses containing DNA.
  • polyhistoric — relating to a polyhistor
  • polyisoprene — a thermoplastic polymer, (C 5 H 8) n , the major constituent of natural rubber and also obtained synthetically.
  • polymorphism — the state or condition of being polymorphous.
  • polyneuritis — inflammation of several nerves at the same time; multiple neuritis.
  • polyomavirus — any of a genus (Polyomavirus) of papovaviruses that naturally infect wild and laboratory mice, and that cause tumors when injected into newborn mice
  • polyrhythmic — the simultaneous occurrence of sharply contrasting rhythms within a composition.
  • polyribosome — polysome.
  • polysaprobic — flourishing in a body of water having a heavy load of decomposed organic matter and almost no free oxygen
  • polytriglyph — (in classical architecture) an intercolumniation of at least four triglyphs.
  • pompeian red — a dull, grayish red.
  • pons varolii — pons (def 1).
  • pontificator — the office or term of office of a pontiff.
  • poodle skirt — 1950s-style woman's circular skirt
  • porcelainite — Mineralogy. mullite.
  • porcelainize — to make into or coat with porcelain or something resembling porcelain.
  • porcelainous — made of or resembling porcelain
  • porcellanise — to bake into porcelain
  • porcellanite — hard and dense rock resembling unglazed porcelain
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