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18-letter words containing p, l, a

  • plenum ventilation — a system of mechanical ventilation in which fresh air is forced into the spaces to be ventilated from a chamber (plenum chamber) at a pressure slightly higher than atmospheric pressure, so as to expel foul air.
  • 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
  • point d'angleterre — a bobbin lace in which the design is worked out with either a needle or bobbin.
  • point-bearing pile — a pile depending on the soil or rock beneath its foot for support.
  • policeman's helmet — a Himalayan balsaminaceous plant, Impatiens glandulifera, with large purplish-pink flowers, introduced into Britain
  • political football — a political issue that is continually debated but has not yet been resolved
  • political prisoner — sb imprisoned for political dissidence
  • political question — a question regarded by the courts as being a matter to be determined by another department of government rather than of law and therefore one with which they will not deal, as the recognition of a foreign state.
  • politically-minded — (of a person or group of people) interested in the way power is achieved and used in a country or society (through government, policy-making, etc)
  • polychromatophilic — having an affinity for more than one kind of stain, especially for acid, neutral, and basic stains, as polychromatophilic erythroblasts characteristic of pernicious anemia.
  • polynesian tattler — a sandpiper, H. incanus, native to the Pacific coastal regions
  • pontifical college — the chief body of priests in ancient Rome.
  • population balance — A population balance is a model showing particle sizes during a grinding process, which is used when designing a process.
  • 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
  • population density — ratio: inhabitants to area
  • population figures — population totals; statistics relating to the size of populations
  • population pyramid — a graph showing the distribution of a population by sex, age, etc.
  • portable equipment — Portable equipment is electrical equipment that can easily be moved from one place to another while in operation or while connected to the supply.
  • portage la prairie — a city in S Manitoba, in S central Canada, W of Winnipeg.
  • portal circulation — blood flow in a portal system.
  • portrait of a lady — a novel (1881) by Henry James.
  • positively charged — having a positive charge
  • post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
  • postal storage car — a railroad car for transporting unsorted mail.
  • postmaster general — the executive head of the postal system of a country.
  • postmillenarianism — postmillennialism.
  • postviral syndrome — debilitating condition occurring as a sequel to viral illness
  • 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.
  • potassium fluoride — a white, crystalline, hygroscopic, toxic powder, KF, used chiefly as an insecticide, a disinfectant, and in etching glass.
  • potassium sulphate — a soluble substance usually obtained as colourless crystals of the decahydrate: used in making glass and as a fertilizer. Formula: K2SO4
  • potential gradient — the rate of change of potential with respect to distance in the direction of greatest change.
  • 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.
  • prairie crab apple — a tree, Malus ioensis, of the rose family, native to the central U.S., having downy branchlets, white or rose-tinted flowers, and round, waxy, greenish fruit.
  • preantepenultimate — third from the end.
  • precedence lossage — /pre's*-dens los'*j/ A misunderstanding of operator precedence resulting in unintended grouping of arithmetic or logical operators when coding an expression. Used especially of mistakes in C code due to the nonintuitively low precedence of "&", "|", "^", "<<" and ">>". For example, the following C expression, intended to test the least significant bit of x, x & 1 == 0 is parsed as x & (1 == 0) which is always zero (false). Some lazy programmers ignore precedence and parenthesise everything. Lisp fans enjoy pointing out that this can't happen in *their* favourite language, which eschews precedence entirely, requiring one to use explicit parentheses everywhere.
  • precipitable water — the total water vapor contained in a unit vertical column of the atmosphere.
  • predicate calculus — predicate logic
  • preparatory school — a private or parochial secondary school, especially one boarding its students and providing a college-preparatory education.
  • prepositional verb — a combination of verb and preposition, often with idiomatic meaning, differing from other phrasal verbs in that an object must always follow the preposition, as take after in The children take after their mother.
  • prerelease showing — a showing of a film before it goes on general release
  • presenile dementia — a form of dementia, of unknown cause, starting before a person is old
  • present participle — Grammar. a participle form, in English having the suffix -ing, denoting repetition or duration of an activity or event: used as an adjective, as in the growing weeds, and in forming progressive verb forms, as in The weeds are growing.
  • presentation layer — (networking)   The second highest layer (layer 6) in the OSI seven layer model. Performs functions such as text compression, code or format conversion to try to smooth out differences between hosts. Allows incompatible processes in the application layer to communicate via the session layer. Documents: ITU Rec. X.226 (ISO 8823), ITU Rec. X.216 (ISO 8822).
  • presidential suite — a suite of rooms, as in a hotel, suitable for a president or other head of state.
  • pressure altimeter — an aneroid barometer adapted for measuring altitude by converting the indicated atmospheric pressure to altitude according to a standard relationship.
  • presumption of law — a presumption based upon a policy of law or a general rule and not upon the facts or evidence in an individual case.
  • primate of england — a title of the archbishop of Canterbury.
  • principal argument — the radian measure of the argument between −π and π of a complex number. Compare argument (def 8c).
  • principal diagonal — a diagonal line or plane.
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