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15-letter words containing o, p, e, r

  • 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.
  • portland cement — a type of hydraulic cement usually made by burning a mixture of limestone and clay in a kiln.
  • portugal laurel — Prunus lusitanica; type of cherry
  • position isomer — any of two or more isomers that differ only in the position occupied by a substituent.
  • positive caster — a person or thing that casts.
  • post-depression — the act of depressing.
  • post-experience — a particular instance of personally encountering or undergoing something: My encounter with the bear in the woods was a frightening experience.
  • post-liberation — the act of liberating or the state of being liberated.
  • post-parturient — bearing or about to bear young; travailing.
  • post-retirement — the act of retiring, withdrawing, or leaving; the state of being retired.
  • post-revolution — an overthrow or repudiation and the thorough replacement of an established government or political system by the people governed.
  • post-tridentine — of or relating to the city of Trent.
  • postdivestiture — taking place after divestiture
  • posthemorrhagic — occurring after a haemorrhage
  • posthole digger — a tool or device for digging a posthole.
  • postoperatively — occurring after a surgical operation.
  • postsynchronize — to add sound, such as dubbing, to a film or video after shooting is completed
  • potash feldspar — any of the feldspar minerals having the composition KAlSi 3 O 8 , as orthoclase.
  • pott's fracture — a fracture of the lower fibula and of the malleolus of the tibia, resulting in outward displacement of the foot.
  • pound one's ear — to sleep
  • powder magazine — a compartment for the storage of ammunition and explosives.
  • power amplifier — an amplifier for increasing the power of a signal.
  • power breakfast — If business people have a power breakfast, they go to a restaurant early in the morning so that they can have a meeting while they eat breakfast.
  • power macintosh — Power Mac
  • power save mode — (architecture)   A feature of a component or subsystem designed to actively reduce its power consumption when not in use. Almost any electronic device might benefit from having a power save mode but the most common application is for portable computers which attempt to conserve battery life by incorporating power saving modes in the CPU, display, disks, printer, or other units.
  • power structure — the system of authority or influence in government, politics, education, etc.: The state elections threatened to upset the existing power structure.
  • 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-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-celebration — an act of celebrating.
  • pre-concentrate — to bring or draw to a common center or point of union; converge; direct toward one point; focus: to concentrate one's attention on a problem; to concentrate the rays of the sun with a lens.
  • pre-consumption — the act of consuming, as by use, decay, or destruction.
  • pre-contractual — a preexisting contract that legally prevents a person from making another contract of the same nature.
  • pre-deprivation — the act of depriving.
  • 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-romanticism — romantic spirit or tendency.
  • precinct police — the police responsible for a district of a city
  • precinct worker — a worker in a polling or electoral district (such as someone who mans voting, etc)
  • preconceptional — a conception or opinion formed beforehand.
  • preconstruction — the act or art of constructing.
  • 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.
  • preferred stock — stock that has a superior claim to that of common stock with respect to dividends and often to assets in the event of liquidation.
  • 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.
  • preformationism — the belief in the theory of preformation
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