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16-letter words containing o, r, a, i

  • polarizing angle — the law that light will receive maximum polarization from a reflecting surface when it is incident to the surface at an angle (angle of polarization or polarizing angle) having a tangent equal to the index of refraction of the surface.
  • polyacrylic acid — a polymer of acrylic acid used as a sizing agent in the manufacture of nylon and other synthetic textiles.
  • polyvinyl formal — a colorless, water-insoluble, polyvinyl acetal produced from partially hydrolyzed polyvinyl acetate and formaldehyde, used chiefly in the manufacture of lacquers.
  • ponderosa (pine) — a yellow pine (Pinus ponderosa) of W North America, valued for its timber
  • poor white trash — white trash.
  • porcelain enamel — a glass coating, made to adhere to a metal or another enamel by fusion.
  • pork scratchings — small pieces of crisply cooked pork crackling, eaten cold as an appetizer with drinks
  • port authorities — the body with overall responsibility for a port
  • port phillip bay — a bay in SE Australia: the harbor of Melbourne. 31 miles (50 km) long; 25 miles (40 km) wide.
  • portable airtime — (communications, wireless)   A wireless, digital communications system enabling user-to-user voice communication, "quicknotes", and alphanumeric messaging.
  • portrait gallery — a gallery where pictures are displayed
  • portrait painter — artist: paints likenesses
  • portuguese india — a former Portuguese overseas territory on the W coast of India, consisting of the districts of Gôa, Daman, and Diu: annexed by India December 1961. Capital: Gôa.
  • posigrade rocket — an auxiliary rocket used to separate the sections of a multistage rocket, fired in the direction of flight.
  • post-reformation — the act of reforming; state of being reformed.
  • post-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.
  • post-romanticism — romantic spirit or tendency.
  • potential energy — the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system.
  • practical reason — (in Kantian ethics) reason applied to the problem of action and choice, especially in ethical matters.
  • practice session — a period of training that takes place over a set period of time, for example an hour or several hours
  • praetorian guard — the bodyguard of a military commander, especially the imperial guard stationed in Rome.
  • pragmatic theory — the theory of truth that the truth of a statement consists in its practical consequences, especially in its agreement with subsequent experience.
  • prairie schooner — a type of covered wagon, similar to but smaller than the Conestoga wagon, used by pioneers in crossing the prairies and plains of North America.
  • pre-conversation — informal interchange of thoughts, information, etc., by spoken words; oral communication between persons; talk; colloquy.
  • pre-emancipation — the act of emancipating.
  • pre-registration — the act of registering.
  • pre-solicitation — the act of soliciting.
  • precinct station — a police station for police responsible for a district of a city
  • preconcentration — the act of concentrating; the state of being concentrated.
  • precontemplation — the act of contemplating; thoughtful observation.
  • predetermination — to settle or decide in advance: He had predetermined his answer to the offer.
  • predispositional — the fact or condition of being predisposed: a predisposition to think optimistically.
  • prerevolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
  • prescription pad — a pad of prescriptions used by doctors, etc
  • presentation box — a specially designed and attractive box to hold a product, and make it look more impressive
  • prespecification — the act of specifying.
  • prestidigitation — sleight of hand; legerdemain.
  • pribilof islands — a group of islands in the Bering Sea, off SW Alaska, belonging to the US: the breeding ground of the northern fur seal. Area: about 168 sq km (65 sq miles)
  • price comparison — Price comparison is comparing the price of the same product in different outlets.
  • primary consumer — (in the food chain) an animal that feeds on plants; a herbivore.
  • primary election — primary (def 15a).
  • primary electron — in thermionics, any of the electrons falling on a body, distinguished from those emitted by it
  • primary producer — any green plant or any of various microorganisms that can convert light energy or chemical energy into organic matter.
  • primrose jasmine — an evergreen shrub, Jasminum mesnyi, of China, having thick, shiny leaflets and yellow flowers with a darker eye.
  • print journalism — journalism as practiced in newspapers and magazines.
  • prismatic colors — the colors of the visible spectrum produced by passing white light through a prism; red, orange, yellow, green, blue, indigo, and violet
  • private property — land or belongings owned by a person or group and kept for their exclusive use
  • privet andromeda — a spreading shrub, Lyonia ligustrina, of the eastern U.S., having leafless, white flowers in terminal clusters.
  • pro-abolitionist — (especially prior to the Civil War) a person who advocated or supported the abolition of slavery in the U.S.
  • processing plant — a factory where raw materials are treated or prepared by a special method, esp one where food is treated in order to preserve it
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