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19-letter words containing a, c, e, t, i

  • parachute spinnaker — a very large spinnaker used on a racing yacht.
  • parallactic ellipse — the apparent ellipse, as seen against the background of more distant stars, described annually by a nearby star because of the earth's orbital motion around the sun. Compare parallax (def 2).
  • parallel projection — a projection from one plane to a second plane in which the lines joining points on the first plane and corresponding images are parallel.
  • parametric equation — one of two or more equations expressing the location of a point on a curve or surface by determining each coordinate separately.
  • parasympathomimetic — having an effect similar to that produced when the parasympathetic nervous system is stimulated
  • parathyroid extract — an aqueous preparation obtained from the parathyroid gland of cattle, used in medicine chiefly in cases of parathyroid deficiency and in veterinary medicine in the treatment of tetanic convulsions.
  • parthenogenetically — development of an egg without fertilization.
  • particle dispersoid — A particle dispersoid is a suspension of solid particles in a gas.
  • particle kinematics — Particle kinematics is the study of the movement of particles, without considering the forces that cause this movement.
  • particle separation — a rule that moves the particle of a phrasal verb, thus deriving a sentence like He looked the answer up from a structure that also underlies He looked up the answer
  • particle technology — Particle technology is knowledge and study which relates to particles, and is used in industry.
  • particular negative — a proposition of the form “Some S is not P.” Symbol: O.
  • pastoral counseling — the use of psychotherapeutic techniques by trained members of the clergy to assist parishioners who seek help for personal or emotional problems.
  • pattern recognition — the automated identification of shapes or forms or patterns of speech.
  • paumotu archipelago — Tuamotu Archipelago.
  • pecuniary advantage — financial advantage that is dishonestly obtained by deception and that constitutes a criminal offence
  • pedestrian crossing — place to cross road
  • pedestrian precinct — A pedestrian precinct is a street or part of a town where vehicles are not allowed.
  • performance anxiety — the stage fright that a person feels when they are about to perform (a play, piece of music etc) in front of an audience
  • phacoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
  • phakoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
  • phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
  • photographic memory — total recall
  • photoreconnaissance — reconnaissance using aerial photography.
  • photovoltaic effect — the phenomenon in which the incidence of light or other electromagnetic radiation upon the junction of two dissimilar materials, as a metal and a semiconductor, induces the generation of an electromotive force.
  • phthalocyanine blue — a pigment used in painting, derived from copper phthalocyanine and characterized chiefly by its brilliant, dark-blue color and by permanence.
  • physical impairment — A physical impairment is a condition in which a part of a person's body is damaged or is not working properly.
  • physical sequential — (file format)   (PS, QSAM, Queued Sequential Access Method) The simplest data set on an IBM mainframe. Sequential files can only be read or written from the beginning: they do not support random access.
  • piece de resistance — the principal dish of a meal.
  • piece of the action — the process or state of acting or of being active: The machine is not in action now.
  • piggyback investing — Piggyback investing is a situation in which a broker repeats a trade on his own behalf immediately after trading for an investor, because he thinks the investor may have inside information.
  • pileated woodpecker — a large, black-and-white American woodpecker, Dryocopus pileatus, having a prominent red crest.
  • pinwheel escapement — a clock escapement in which two pallets, usually of unequal length, alternately engage and release pins set on the escape wheel perpendicular to its plane of rotation.
  • pirates of penzance — an operetta (1879) by Sir William S. Gilbert and Sir Arthur Sullivan.
  • pistachio ice cream — ice cream flavoured with pistachios
  • plastic deformation — In plastic deformation a material changes shape when a stress is applied to it and does not go back to its original state when the stress is removed.
  • pneumatic conveying — Pneumatic conveying is the movement of powdered or granulated solids using air.
  • pneumogastric nerve — the vagus nerve.
  • pocket-handkerchief — handkerchief (def 1).
  • poincare conjecture — Mathematics. the question of whether a compact, simply connected three-dimensional manifold is topologically equivalent to a three-dimensional sphere.
  • police headquarters — building where police are stationed
  • political geography — the branch of human geography that deals with the relationship between political processes and spatial structures (regions, territories, etc)
  • political scientist — A political scientist is someone who studies, writes, or lectures about political science.
  • political-scientist — a social science dealing with political institutions and with the principles and conduct of government.
  • politically correct — marked by or adhering to a typically progressive orthodoxy on issues involving especially ethnicity, gender, sexual orientation, or ecology: The actor’s comment about unattractive women was not politically correct. The CEO feels that people who care about being politically correct are overly sensitive. Abbreviations: PC, P.C.
  • population genetics — the branch of genetics concerned with the hereditary makeup of populations.
  • post-and-rail fence — a fence constructed of upright wooden posts with horizontal timber slotted through it
  • postage and packing — the cost of packing and mailing an item bought by post
  • potassium carbonate — a white, granular, water-soluble powder, K 2 CO 3 , used chiefly in the manufacture of soap, glass, and potassium salts.
  • preach to the choir — to express an opinion to someone who is already in agreement with it
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