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18-letter words containing p, i, r, a, n, e

  • pan american union — a former organization of American republics dedicated to furthering understanding and peace: replaced in 1970 by the secretariat of the Organization of American States.
  • paper handkerchief — a handkerchief made from tissue paper
  • parachute regiment — an airborne regiment of an army
  • 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 importing — the importing of certain goods, esp pharmaceutical drugs, by dealers who undersell local manufacturers
  • 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.
  • parliamentarianism — advocacy of a parliamentary system of government.
  • 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.
  • partial-vegetarian — a person who eats mostly plant foods, dairy products, and eggs, and occasionally chicken, fish, and red meat.
  • particeps criminis — an accomplice in a crime.
  • passing-out parade — a ceremonial parade of cadets who have completed their training
  • passive resistance — opposition to a government or to specific governmental laws by the use of noncooperation and other nonviolent methods, as economic boycotts and protest marches.
  • pattern bargaining — a collective bargaining technique in which contract terms in one settlement are used as models to be imposed on other negotiating parties within an industry.
  • pci mezzanine card — (hardware)   (PMC) A family of low profile mezzanine cards for VMEbus, Futurebus+, desktop computers and other computer systems with logical and electrical layers based on the Peripheral Component Interconnect (PCI) specification. PMC is defined in IEEE P1386.1 and follows the Common Mezzanine Card (CMC) mechanical specification. PCI2.0 defines a 4.2 inch by 12.3 inch board that plugs perpendicularly into a mother board.
  • peacekeeping force — a force designated to the maintenance of peace, esp the prevention of further fighting between hostile forces in an area
  • peasant proprietor — a peasant who owns land, especially the land he or she tills.
  • pectoral sandpiper — an American sandpiper, Calidris melanotos, the male of which, when courting, inflates its chest conspicuously.
  • pedestrian traffic — the people coming and going on foot in a street, town, etc
  • pellitory of spain — a small Mediterranean plant, Anacyclus pyrethrum, the root of which contains an oil formerly used to relieve toothache: family Asteraceae (composites)
  • people trafficking — the practice of bringing immigrants into a country illegally
  • peppermint camphor — menthol.
  • percentile ranking — the percentage of scores that a particular score is greater than
  • 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.
  • perennial ryegrass — any of several European grasses of the genus Lolium, as L. perenne (perennial ryegrass) grown for forage in the U.S.
  • performance artist — an artist that is involved in a theatrical presentation that incorporates various art forms, such as dance, sculpture, music, etc
  • perlocutionary act — the action of affecting someone by uttering certain words
  • permanent resident — an immigrant who has been given official residential status, often prior to being granted citizenship
  • pernicious anaemia — Pernicious anaemia is a very severe blood disease.
  • personal assistant — aide
  • personal exemption — Your personal exemption is the amount of money that is deducted from your gross income before you have to start paying income tax.
  • personal insurance — insurance on personal risk, such as car insurance, health insurance or loss of earnings insurance
  • personal organizer — a small notebook with sections for personal information, as dates and addresses.
  • pescadores-islands — (used with a plural verb) Penghu.
  • phanerocrystalline — (of a rock) having the principal constituents in the form of crystals visible to the naked eye.
  • phoenician juniper — a type of juniper that is found in the Mediterranean region
  • phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
  • photoisomerization — isomerization induced by light.
  • phthalic anhydride — a white, crystalline, slightly water-soluble solid, C 8 H 4 O 3 , used chiefly in the manufacture of dyes, alkyd resins, and plasticizers.
  • physical inventory — To carry out a physical inventory is to count all the stock on hand.
  • plains grasshopper — a large, destructive short-horned grasshopper, Brachystola magna, of the western U.S., marked by pinkish hind wings.
  • plane polarization — a type of polarization in which the electric vector of waves of light or other electromagnetic radiation is restricted to vibration in a single plane
  • plane trigonometry — the branch of trigonometry dealing with plane triangles.
  • 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).
  • pneumatic conveyor — a tube through which powdered or granular material, such as cement, grain, etc is transported by a flow of air
  • point d'angleterre — a bobbin lace in which the design is worked out with either a needle or bobbin.
  • 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-bearing pile — a pile depending on the soil or rock beneath its foot for support.
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