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15-letter words containing a, p, i, e

  • polynomial-time — (complexity)   (P) The set or property of problems which can be solved by a known polynomial-time algorithm.
  • pontine marshes — an area of W Italy, southeast of Rome: formerly malarial swamps, drained in 1932–34 after numerous attempts since 160 bc had failed
  • port wine stain — a large birthmark of purplish color, usually on the face or neck.
  • port-wine stain — a large birthmark of purplish color, usually on the face or neck.
  • portable pixmap — (file format)   (PPM) A colour image file format. A PPM file contains the following: a two character "{magic number}" - "P3", the width in pixels, the height in pixels, the maximum colour component value, HEIGHT rows of WIDTH {pixels}. The rows are ordered from top to bottom with the pixels in each row ordered from left to right. Each pixel is represented as three values for red, green, and blue. All parts are separated by whitespace and numbers are in decimal ASCIII representation. A zero pixel component means that colour is absent. Characters from a "#" to the next end-of-line are ignored and no line should be longer than 70 characters. Here is an example of a small pixmap in this format: P3 # feep.ppm 4 4 15 0 0 0 0 0 0 0 0 0 15 0 15 0 0 0 0 15 7 0 0 0 0 0 0 0 0 0 0 0 0 0 15 7 0 0 0 15 0 15 0 0 0 0 0 0 0 0 0 A "RAWBITS" variant has magic number "P6", pixel values are stored as plain binary bytes, instead of ASCII decimal and no whitespace is allowed after a single whitespace character after the maximum colour component value which must be less than or equal to 255.
  • portative organ — capable of being carried; portable.
  • positive caster — a person or thing that casts.
  • posse comitatus — the body of persons that a peace officer of a county is empowered to call upon for assistance in preserving the peace, making arrests, and serving writs.
  • post-apoplectic — of or relating to apoplexy or stroke.
  • post-collegiate — of or relating to a college: collegiate life.
  • post-liberation — the act of liberating or the state of being liberated.
  • post-millennial — of or relating to the period following the millennium.
  • post-parturient — bearing or about to bear young; travailing.
  • postdevaluation — the period following the devaluation of a currency
  • posthemorrhagic — occurring after a haemorrhage
  • postoperatively — occurring after a surgical operation.
  • powder magazine — a compartment for the storage of ammunition and explosives.
  • power amplifier — an amplifier for increasing the power of a signal.
  • power macintosh — Power Mac
  • practical nurse — a person who has not graduated from an accredited school of nursing but whose vocation is caring for the sick.
  • pragmaticalness — the quality of being pragmatical or meddlesome
  • prairie breaker — breaker1 (def 6).
  • prairie chicken — either of two North American gallinaceous birds of western prairies, Tympanuchus cupido (greater prairie chicken) or T. pallidicinctus (lesser prairie chicken) having rufous, brown, black, and white plumage.
  • prairie oysters — a raw egg, or the yolk of a raw egg, often mixed with seasonings, as salt, pepper, Worcestershire sauce, and used as a hangover remedy.
  • prairie pointer — shooting star (def 2).
  • prairie village — a city in E Kansas.
  • prairie warbler — an eastern North American wood warbler, Dendroica discolor, olive-green above, yellow below, and striped with black on the face and sides.
  • prairie-dogging — (in an open-plan office) the practice of looking over the top of one's partition in order to discover the source of or reason for a commotion
  • pre-acquisition — the act of acquiring or gaining possession: the acquisition of real estate.
  • pre-advertising — to announce or praise (a product, service, etc.) in some public medium of communication in order to induce people to buy or use it: to advertise a new brand of toothpaste.
  • pre-celebration — an act of celebrating.
  • pre-deprivation — the act of depriving.
  • pre-elizabethan — (of English culture, history, traditions, etc.) before the reign of Queen Elizabeth I; before the second half of the 16th century.
  • pre-established — to establish beforehand.
  • pre-legislative — having the function of making laws: a legislative body.
  • pre-negotiation — mutual discussion and arrangement of the terms of a transaction or agreement: the negotiation of a treaty.
  • pre-preparation — a proceeding, measure, or provision by which one prepares for something: preparations for a journey.
  • pre-reformation — the act of reforming; state of being reformed.
  • pre-renaissance — the activity, spirit, or time of the great revival of art, literature, and learning in Europe beginning in the 14th century and extending to the 17th century, marking the transition from the medieval to the modern world.
  • pre-romanticism — romantic spirit or tendency.
  • preacquaintance — prior acquaintance with a person or with information, the state of having been preacquainted
  • preagricultural — existing or occurring prior to the introduction of agriculture; of or relating to a society existing at this time
  • precipitantness — the condition or quality of being precipitant, hastiness
  • preconceptional — a conception or opinion formed beforehand.
  • predeterminable — able to be predetermined; able to be determined in advance
  • predicate logic — (logic)   (Or "predicate calculus") An extension of propositional logic with separate symbols for predicates, subjects, and quantifiers. For example, where propositional logic might assign a single symbol P to the proposition "All men are mortal", predicate logic can define the predicate M(x) which asserts that the subject, x, is mortal and bind x with the universal quantifier ("For all"): All x . M(x) Higher-order predicate logic allows predicates to be the subjects of other predicates.
  • preequalization — preemphasis.
  • preferentialism — the economic system of preference, esp amongst British commonwealth countries
  • preferentialist — someone who believes in preferentialism
  • prefix notation — (language)   (Or "prefix syntax") One of the possible orderings of functions and operands: in prefix notation the function precedes all its operands. For example, what may normally be written as "1+2" becomes "(+ 1 2)". A few languages (e.g., lisp) have strictly prefix syntax, many more employ prefix notation in combination with infix notation. The opposite, postfix notation, is somewhat rarer.
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