15-letter words containing p, i, r, a, o
- posthemorrhagic — occurring after a haemorrhage
- postirradiation — occurring after or due to irradiation
- postoperatively — occurring after a surgical operation.
- poststimulatory — following stimulation
- posttransfusion — occurring after or as a result of a transfusion
- poultry farming — breeding and keeping fowl
- 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
- 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-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.
- preconceptional — a conception or opinion formed beforehand.
- 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.
- 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
- preformationist — someone who advocates the theory of preformation
- preimplantation — relating to the period before implantation in the uterus
- premodification — an act or instance of modifying.
- prenotification — notice that is given or served prior to a specific date; advance notice.
- preprofessional — of or relating to the time preceding one's concentrated study or practice of a profession: preprofessional training.
- preregistration — early registration, in advance of event or general registration
- presentationism — the doctrine that in perception, or in all forms of knowledge, there is an immediate awareness of the things perceived.
- preservationism — a person who advocates or promotes preservation, especially of wildlife, natural areas, or historical places.
- preservationist — a person who advocates or promotes preservation, especially of wildlife, natural areas, or historical places.
- prestidigitator — sleight of hand; legerdemain.
- preverification — the state of being verified.
- price inflation — inflation fuelled by rising prices
- primary contact — a communication or relationship between people that is characterized by intimacy and personal familiarity.
- primary process — the generally unorganized mental activity characteristic of the unconscious and occurring in dreams, fantasies, and related processes.
- primary product — a product consisting of a natural raw material; an unmanufactured product
- primary rainbow — the most commonly seen rainbow, formed by light rays that undergo a single internal reflection in a drop of water.
- primary storage — main memory
- primo de rivera — Miguel [mee-gel] /miˈgɛl/ (Show IPA), Marqués de Estella [mahr-kes th e es-te-lyah] /mɑrˈkɛs ðɛ ɛsˈtɛ lyɑ/ (Show IPA), (Miguel Prima de Rivera y Orbaneja) 1870–1930, Spanish general and political leader: dictator of Spain 1923–29.
- primordial soup — the seas and atmosphere as they existed on earth before the existence of life, consisting primarily of an oxygen-free gaseous mixture containing chiefly water, hydrogen, methane, ammonia, and carbon dioxide.
- primrose family — the plant family Primulaceae, characterized by herbaceous plants having simple, opposite, whorled, or basal leaves, flowers with a five-lobed corolla, and capsular fruit, and including cyclamen, loosestrife of the genus Lysimachia, pimpernel, primrose, and shooting star.
- prince of peace — Jesus Christ, regarded by Christians as the Messiah. Isa. 9:6.
- prince of wales — Prince of Wales and Duke of Cornwall ("The Black Prince") 1330–76, English military leader (son of Edward III).
- principal focus — focal point (def 1).
- principal point — the point where a principal plane intersects the axis.
- prior restraint — a court order banning publication of unpublished material.
- prism binocular — Usually, prism binoculars. Optics. binocular (def 1).