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18-letter words containing o, u, t

  • over-pronunciation — to pronounce (a word, syllable, etc.) in an exaggerated, affected, or excessively careful manner.
  • overpressurization — pressure in excess of normal atmospheric pressure, as that caused by an explosion's shock wave or created in an accelerating airplane.
  • ox-tongue partisan — a shafted weapon having a long, wide, tapering blade.
  • par for the course — an equality in value or standing; a level of equality: The gains and the losses are on a par.
  • parallel computing — parallel processing
  • parallel evolution — the independent development of closely corresponding adaptive features in two or more groups of organisms that occupy different but equivalent habitats, as marsupial mammals in Australia and placental mammals on other continents.
  • 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.
  • partial evaluation — (compiler, algorithm)   (Or "specialisation") An optimisation technique where the compiler evaluates some subexpressions at compile-time. For example, Partial evaluation might change the termination properties of the program if, for example, the expression (x * 0) was reduced to 0 it would terminate even if x (and thus x * 0) did not. It may be necessary to reorder an expression to partially evaluate it, e.g. f x y = (x + y) + 1 g z = f 3 z If we rewrite f: f x y = (x + 1) + y then the expression x+1 becomes a constant for the function g and we can say g z = f 3 z = (3 + 1) + z = 4 + z Partial evaluation of built-in functions applied to constant arguments is known as constant folding. See also full laziness.
  • pass the hat round — to collect money, as for a cause
  • passing modulation — a modulation of a temporary nature.
  • passing-out parade — a ceremonial parade of cadets who have completed their training
  • peak-to-peak value — Peak-to-peak value is the maximum voltage change occurring during one cycle of alternating voltage or current.
  • peano's postulates — a collection of axioms concerning the properties of the set of all positive integers, including the principle of mathematical induction.
  • pensioneer trustee — (in Britain) a person authorized by HMRC to oversee the management of a pension fund
  • percussion section — orchestra, group: drums, etc.
  • perfect continuous — perfect progressive.
  • perish the thought — to die or be destroyed through violence, privation, etc.: to perish in an earthquake.
  • perlocutionary act — the action of affecting someone by uttering certain words
  • petite bourgeoisie — the portion of the bourgeoisie having the least wealth and lowest social status; the lower middle class.
  • petroleum engineer — A petroleum engineer is an engineer who is involved in most stages of oil and gas field evaluation, development, and production, whose job is to maximize hydrocarbon recovery and reduce costs and environmental impact.
  • physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
  • phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
  • piecewise function — a function whose definition changes depending on the value of the independent variable
  • pigmy hippopotamus — a related but smaller animal, Choeropsis liberiensis
  • piperonyl butoxide — a light-brown liquid, C 1 9 H 3 0 O 5 , used chiefly as a synergist in certain insecticides.
  • pitch-and-run shot — chip shot.
  • play cat and mouse — Also called cat and rat. a children's game in which players in a circle keep a player from moving into or out of the circle and permit a second player to move into or out of the circle to escape the pursuing first player.
  • 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.
  • pneumatic conveyor — a tube through which powdered or granular material, such as cement, grain, etc is transported by a flow of air
  • point of departure — Nautical. the precise location of a vessel, established in order to set a course, especially in beginning a voyage in open water.
  • point of no return — Aviation. the point in a flight at which an aircraft will lack sufficient fuel to return to its starting point.
  • 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.
  • 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.
  • porcupine anteater — an echidna or spiny anteater.
  • 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.
  • portal circulation — blood flow in a portal system.
  • porter-house steak — Also called porterhouse steak. a choice cut of beef from between the prime ribs and the sirloin.
  • portuguese guinean — of or relating to Portuguese Guinea, a former name for Guinea-Bissau, or its inhabitants
  • post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
  • 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 myronate — sinigrin.
  • potassium sulphate — a soluble substance usually obtained as colourless crystals of the decahydrate: used in making glass and as a fertilizer. Formula: K2SO4
  • pound the pavement — a paved road, highway, etc.
  • 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.
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