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15-letter words containing p, i, r, a, o

  • retroperitoneal — of or relating to the area behind the abdominal lining, where organs such as the kidneys and bladder are located
  • río de la plata — Rí·o de la [ree-aw th e lah] /ˈri ɔ ðɛ lɑ/ (Show IPA) an estuary on the SE coast of South America between Argentina and Uruguay, formed by the Uruguay and Paraná rivers, about 185 miles (290 km) long.
  • rite of passage — Anthropology. a ceremony performed to facilitate or mark a person's change of status upon any of several highly important occasions, as at the onset of puberty or upon entry into marriage or into a clan.
  • rocket airplane — an airplane propelled wholly or mainly by a rocket engine.
  • room-and-pillar — noting a means of extracting coal or other minerals from underground deposits by first cutting out rooms, then robbing the pillars between them; pillar-and-breast.
  • royal poinciana — a tree, Delonix regia, of the legume family, native to Madagascar, having showy clusters of brilliant scarlet flowers and long, flat, woody pods.
  • sales promotion — the methods or techniques for creating public acceptance of or interest in a product, usually in addition to standard merchandising techniques, as advertising or personal selling, and generally consisting of the offer of free samples, gifts made to a purchaser, or the like.
  • saprophytically — any organism that lives on dead organic matter, as certain fungi and bacteria.
  • sarcoptic mange — mange caused by burrowing mites of the genus Sarcoptes.
  • schopenhauerian — Arthur [ahr-too r] /ˈɑr tʊər/ (Show IPA), 1788–1860, German philosopher.
  • schopenhauerism — the philosophy of Schopenhauer, who taught that only the cessation of desire can solve the problems arising from the universal impulse of the will to live.
  • scratching post — a block or post of wood, usually covered with carpeting, on which a cat can use its claws.
  • seaside sparrow — a species of sparrow, Ammospiza maritima, existing in two subspecies, one (Cape Sable seaside sparrow) having dark olive-drab plumage with a lighter breast and underbelly, and the other (dusky seaside sparrow) having bold black and white markings on the breast and underbelly: the dusky seaside sparrow is almost extinct.
  • self-absorption — preoccupation with oneself or one's own affairs.
  • self-persuasion — the act of persuading or seeking to persuade.
  • self-proclaimed — to announce or declare in an official or formal manner: to proclaim war.
  • semipornography — partial pornography; material that is almost pornographic
  • septentrionally — northwards; in the direction of the north
  • share ownership — the owning of shares in a company
  • shock probation — the release on probation of a criminal after brief imprisonment
  • shopping arcade — a place where a number of shops are connected together under one roof
  • shrimp cocktail — prawns and lettuce in Mary Rose sauce
  • sidereal period — the period of revolution of a body about another with respect to one or more distant stars
  • simple fraction — a ratio of two integers.
  • simple majority — less than half of the total votes cast but more than the minimum required to win, as when there are more than two candidates or choices.
  • singapore sling — a cocktail of gin, cherry brandy, sugar, and water.
  • sinorespiratory — of, relating to, or affecting the paranasal sinuses and the respiratory tract.
  • slumpflationary — of or relating to slumpflation
  • socialist party — a U.S. political party advocating socialism, formed about 1900 chiefly by former members of the Social Democratic Party and the Socialist Labor Party.
  • somatic therapy — any of a group of treatments presumed to act on biological factors leading to mental illness.
  • southern paiute — See under Paiute (def 2).
  • spanish morocco — French Maroc. Spanish Marruecos. a kingdom in NW Africa: formed from a sultanate that was divided into two protectorates (French Morocco and Spanish Morocco) and an international zone. 172,104 sq. mi. (445,749 sq. km). Capital: Rabat. Compare Tangier Zone.
  • spanish trefoil — alfalfa.
  • sparcstation 10 — (computer)   A SPARCStation with a 4-way associative data cache and a five-way associative instruction cache. The 10/31, 10/41 and 10/51 also have a secondary cache not present on earlier SPARCStations.
  • sparcstation 20 — (computer)   A SPARCStation based on the HyperSPARC processor. The 20 is compatible with the earlier SPARCstation 10. It has a clock rate of 100MHz and delivers a SPECfp92 of 127.6. The SPARCstation 20 Model 71 and 712MP uses the 75MHz SuperSPARC processors that give a 35% and 14% boost to SPECint92 and SPECfp92 respectively compared to the 61/612MP.
  • spawning ground — a place where fish deposit their eggs for fertilization
  • spectrochemical — of, relating to, or utilizing the techniques of spectrochemistry.
  • speed indicator — an instrument for counting the number of revolutions of a gasoline engine.
  • spermatoblastic — relating to a spermatoblast
  • spermatogenesis — the origin and development of spermatozoa.
  • sphaerosiderite — a type of siderite
  • spheroidization — the conversion of grains into spheroids
  • spiral notebook — a notebook held together by a coil of wire passed through small holes punched at the back edge of the covers and individual pages
  • spirits of salt — a solution of hydrochloric acid in water
  • spirochaetaemia — the presence of spirochaetes in the blood
  • sporting chance — an even or fair opportunity for a favorable outcome in an enterprise, as winning in a game of chance or in any kind of contest: They gave the less experienced players a sporting chance by handicapping the experts.
  • stamping ground — a habitual or favorite haunt.
  • starting pistol — a pistol used to give the signal to start a race
  • steak au poivre — pepper steak (def 2).
  • stereotypically — in a stereotypical manner
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