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17-letter words containing p, r, i, c

  • optical isomerism — stereoisomerism in which the isomers are identical in molecular weight and most chemical and physical properties but differ in their effect on the rotation of polarized light.
  • 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 psychosis — a severe mental illness produced by damage to the brain, as a result of poisoning, alcoholism, disease, etc
  • origin of species — (On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) a treatise (1859) by Charles Darwin setting forth his theory of evolution.
  • 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.
  • pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
  • pacific tree frog — a common terrestrial frog, Hyla regilla, of western North America, having a dark stripe along each side of the head.
  • pair of compasses — compass (def 7)
  • palace revolution — a challenge to or overthrow of a sovereign or other leader by members of the ruling family or group.
  • paleobiochemistry — the study of biochemical processes that occurred in fossil life forms.
  • paleoconservative — a person advocating an older, traditional type of conservatism, especially in politics.
  • paradoxical sleep — REM sleep.
  • paraperiodic acid — the crystalline compound H5IO6, an oxyacid of iodine
  • parathyroidectomy — the excision of a parathyroid gland.
  • paratungstic acid — an oxyacid acid of tungsten. Formula: H10W12O14
  • parted per tierce — tierced.
  • particle kinetics — Particle kinetics is the study of the movement of particles and the forces that cause this movement.
  • particle velocity — the velocity of a point in a medium that is undergoing wave motion.
  • particularization — to make particular.
  • pascal's triangle — a triangular arrangement of the binomial coefficients of the expansion (x + y) n for positive integral values of n.
  • passenger traffic — number of passengers
  • 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.
  • pathological liar — a person who tells lies frequently, with no rational motive for doing so.
  • patriarchal cross — a Latin cross having a shorter crosspiece above the customary one.
  • pecorino (cheese) — an Italian cheese made of sheep's milk; specif., such a cheese that is dry, sharp, and very hard
  • per capita income — the total income of an area or country divided by the number of people in that area or country
  • per procurationem — by one acting as an agent; by proxy.
  • percussion bullet — a bullet that is exploded by percussion
  • peridot of ceylon — a honey-colored tourmaline, used as a gem: not a true peridot.
  • periodic function — a function of a real or complex variable that is periodic.
  • periodic sentence — a sentence that, by leaving the completion of its main clause to the end, produces an effect of suspense, as in Unable to join the others at the dance because of my sprained ankle, I went to a movie.
  • periodical cicada — seventeen-year locust.
  • peripheral device — peripheral
  • pernicious anemia — Pernicious anemia is a very severe blood disease.
  • perpetual spinach — a variety of spinach that keeps producing edible leaves
  • personal distance — personal space.
  • personality clash — friction between two people who have different personalities or points of view
  • personnel carrier — a vehicle used for transporting troops
  • personnel officer — a worker responsible for recruiting employees and dealing with matters relating to them
  • perspicaciousness — having keen mental perception and understanding; discerning: to exhibit perspicacious judgment.
  • petitio principii — a fallacy in reasoning resulting from the assumption of that which in the beginning was set forth to be proved; begging the question.
  • petrol filler cap — a small cover that goes over the hole in a vehicle into which you put petrol
  • pharmacologically — the science dealing with the preparation, uses, and especially the effects of drugs.
  • phenylformic acid — benzoic acid.
  • philanthropically — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
  • phonological rule — an operation in generative phonology that substitutes one sound or class of sounds for another in a phonological derivation.
  • photoreactivation — a process that repairs DNA damaged by ultraviolet light using an enzyme that requires visible light.
  • phototherapeutics — the branch of therapeutics that deals with the curative use of light rays.
  • physical exercise — movements and activities done to keep your body healthy or make it stronger
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