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

  • physiography — the science of physical geography.
  • physiologies — the branch of biology dealing with the functions and activities of living organisms and their parts, including all physical and chemical processes.
  • physiologist — a specialist in physiology.
  • physogastric — pertaining to the swollen, membranous abdomen of certain insects, especially termite and ant queens.
  • phytogenesis — the origin and development of plants.
  • piano lesson — music class in playing the piano
  • picornavirus — any of a group of small, RNA-containing viruses of the family Picornaviridae, infectious to humans and other animals, and including the poliovirus and the rhinoviruses that cause the common cold.
  • picot stitch — a stitch that produces picots, or loops, of thread that extend beneath a row of connecting or finishing stitches.
  • pictorialism — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
  • pictorialist — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
  • picture show — motion picture.
  • piece of ass — a separate or limited portion or quantity of something: a piece of land; a piece of chocolate.
  • pigeon-chest — chicken breast.
  • pillow sword — a straight sword of the 17th century.
  • pilot signal — a signal, as a flag or light, used to request a pilot.
  • pinchcommons — a person who is frugal with food
  • pirate coast — an independent federation in E Arabia, formed in 1971, now comprising seven emirates on the S coast (formerly, Pirate Coast or Trucial Coast) of the Persian Gulf, formerly under British protection: Abu Dhabi, Dubai, Sharjah, Ajman, Umm al-Qaiwain, Ras al-Khaimah (joined 1972), and Fujairah. About 32,300 sq. mi. (83,657 sq. km). Capital: Abu Dhabi. Abbreviation: U.A.E.
  • piston skirt — The piston skirt is the cylindrical walls of a piston.
  • pityrosporum — a genus of fungi that live on the skin, esp that of the scalp and face, present in conditions such as dandruff and dermatitis
  • plain-spoken — candid; frank; blunt.
  • plainclothes — Plainclothes police officers wear ordinary clothes instead of a police uniform.
  • plastic bomb — a bomb made of plastic explosive.
  • plastic flow — deformation of a material that remains rigid under stresses of less than a certain intensity but that behaves under severer stresses approximately as a Newtonian fluid.
  • plastic foam — expanded plastic.
  • plastination — a technique for embalming bodies by impregnating whole organs with silicon polymers
  • plastocyanin — a blue protein found in green plants and in some bacteria
  • pleiochasium — a flowering system in which several buds come out at the same time
  • pleiotropism — the condition of a gene affecting more than one characteristic of the phenotype
  • pleomorphism — existence of an organism in two or more distinct forms during the life cycle; polymorphism.
  • plumbaginous — containing graphite.
  • plumbiferous — yielding or containing lead.
  • pneumocystis — any protozoan of the genus Pneumocystis, esp P. carinii, which is a cause of pneumonia in people whose immune defences have been lowered by drugs or a disease
  • pocket-sized — If you describe something as pocket-sized, you approve of it because it is small enough to fit in your pocket.
  • podoconiosis — elephantiasis of the lower legs
  • poetastering — the profession of being a poetaster
  • poeticalness — the characteristic of being poetical
  • 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
  • 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 system — Printing. a system for grading the sizes of type bodies, leads, etc., that employs the point as a unit of measurement. Compare point (def 48a).
  • 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.
  • poison gland — a gland in some fish and amphibians that secretes venomous material
  • poison sumac — a shrub or small tree, Rhus vernix (or Toxicodendron vernix), of swampy areas of the eastern U.S., having pinnate leaves and causing severe dermatitis when touched by persons sensitive to it.
  • polar lights — the aurora borealis in the Northern Hemisphere or the aurora australis in the Southern Hemisphere.
  • polariscopic — relating to a polariscope
  • police state — a nation in which the police, especially a secret police, summarily suppresses any social, economic, or political act that conflicts with governmental policy.
  • policeperson — a member of a police force.
  • policymakers — a person responsible for making policy, especially in government.
  • poliorcetics — the science of siegecraft
  • polish wheat — a wheat, Triticum polonicum, grown chiefly in S Europe, N Africa, and Turkestan.
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