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18-letter words containing c, u, p, l, a, r

  • numerical aperture — a measure of the resolving power of a microscope, equal to the index of refraction of the medium in which the object is placed multiplied by the sine of the angle made with the axis by the most oblique ray entering the instrument, the resolving power increasing as the product increases. Abbreviation: N.A.
  • occupational group — An occupational group is a category used by insurance companies to classify jobs according to how hazardous they are.
  • optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
  • pacinian corpuscle — (sometimes lowercase) a microscopic, onionlike body consisting of layers of connective tissue wrapped around a nerve ending, located in the deep layers of skin, tendons, etc., and functioning as a sensory receptor of pressure and vibration.
  • parallel computing — parallel processing
  • parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
  • particular average — a loss at sea, as through accident or negligence, that is borne solely by the owner of the lost property. Abbreviation: P.A.
  • particulate filter — A particulate filter is a filter to remove particles that are present the air, for example in the exhaust of a diesel engine.
  • particulate matter — Particulate matter is solid or liquid particles in the air, which are measured in PM-10 units and are particles with a diameter of ten micrometers or less.
  • passive vocabulary — all the words, collectively, that a person can understand
  • perceptual defence — the process by which it is thought that certain stimuli are either not perceived or are distorted due to their offensive, unpleasant, or threatening nature
  • perceptual mapping — the use of a graph or map in the development of a new product, in which the proximity of consumers' images of the new product to those of an ideal product provide an indication of the new product's likely success
  • percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood.
  • perlocutionary act — the action of affecting someone by uttering certain words
  • perpetual calendar — a calendar devised to be used for many years, as in determining the day of the week on which a given date falls.
  • personal insurance — insurance on personal risk, such as car insurance, health insurance or loss of earnings insurance
  • pleasure principle — an automatic mental drive or instinct seeking to avoid pain and to obtain pleasure.
  • plenary indulgence — a remission of the total temporal punishment that is still due to sin after absolution. Compare indulgence (def 6).
  • plumber's merchant — a shop or business that sells things needed for the job of installing and repairing pipes, fixtures, etc, for water, drainage, and gas
  • population control — a policy of attempting to limit the growth in numbers of a population, esp in poor or densely populated parts of the world, by programmes of contraception or sterilization
  • portal circulation — blood flow in a portal system.
  • potassium chlorate — a white or colorless, crystalline, water-soluble, poisonous solid, KClO 3 , used chiefly as an oxidizing agent in the manufacture of explosives, fireworks, matches, bleaches, and disinfectants.
  • potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
  • pour cold water on — If someone pours cold water on a plan or idea, they criticize it so much that people lose their enthusiasm for it.
  • predicate calculus — predicate logic
  • principal argument — the radian measure of the argument between −π and π of a complex number. Compare argument (def 8c).
  • protocol data unit — (PDU) A packet of data passed across a network. The term implies a specific layer of the OSI seven layer model and a specific protocol.
  • provably difficult — The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
  • provascular tissue — procambium.
  • provincial council — (formerly) a council administering any of the New Zealand provinces
  • public corporation — a corporation, owned and operated by a government, established for the administration of certain public programs.
  • pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.
  • pulp canal therapy — endodontics.
  • pyromucic aldehyde — furfural.
  • pyrosulphuric acid — a fuming liquid acid made by adding sulphur trioxide to concentrated sulphuric acid. Formula: H2S2O7
  • real-time computer — a computer that can process data or information almost immediately
  • repayment schedule — a document detailing the specific terms of a borrower's loan, such as monthly payment, interest rate, due dates etc
  • resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
  • rural municipality — any lightly settled area in Canada lacking a local elected government and administered directly by a provincial government.
  • sampling frequency — sample rate
  • scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
  • self-preoccupation — the state of being preoccupied.
  • special prosecutor — (formerly) an independent counsel.
  • subatomic particle — physics:
  • super royal octavo — a book size, 63⁄4 by 101⁄4 inches
  • superciliary ridge — browridge.
  • surgical appliance — a specialized device used by somebody to relieve a particular medical condition
  • the general public — the people in a society; people in general
  • thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
  • to hold your peace — If you hold or keep your peace, you do not speak, even though there is something you want or ought to say.
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