15-letter words containing a, p, o, r
- 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.
- press of canvas — the most sail a vessel can carry under given conditions
- 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).
- prisoner of war — a person who is captured and held by an enemy during war, especially a member of the armed forces. Abbreviation: POW.
- prisoner's base — any of various children's games in which each of two teams has a home base where members of the opposing team are kept prisoner after being tagged or caught and from which they can be freed only in specified ways.
- private company — a company whose shareholders may not exceed 50 in number and whose shares may not be offered for public subscription.
- private soldier — A private soldier is a soldier of the lowest rank in an army or the marines.
- private tuition — instruction, esp that received in a small group or individually, that is arranged and paid for by an individual rather than by the state
- privately owned — owned by a private individual or organization, rather than by the state or a public body
- pro-abortionist — pro-choice.
- pro-confederate — united in a league, alliance, or conspiracy.
- pro-integration — an act or instance of combining into an integral whole.
- pro-nationalist — a person devoted to nationalism.
- probation order — an order imposed by a magistrate or judge under which an offender is sentenced to probation rather than imprisonment
- probationership — the position of a probationer
- probit equation — A probit equation is used to quantify the relationship between the concentration of a dangerous material and its effect on people.
- problematically — of the nature of a problem; doubtful; uncertain; questionable.
- process heating — Process heating is heating, usually from steam, which is used to increase the temperature in a process vessel.
- processionalist — a member of a procession
- procrastinating — to defer action; delay: to procrastinate until an opportunity is lost.
- procrastination — the act or habit of procrastinating, or putting off or delaying, especially something requiring immediate attention: She was smart, but her constant procrastination led her to be late with almost every assignment.
- procrastinative — to defer action; delay: to procrastinate until an opportunity is lost.