17-letter words containing o, a, r, f, i, s
- of its own accord — If something happens of its own accord, it seems to happen by itself, without anyone making it happen.
- orifice discharge — Orifice discharge is a model for calculating how quickly a fluid will come out of a punctured vessel or pipe.
- pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
- pair of compasses — compass (def 7)
- pate de foie gras — See under foie gras.
- plains of abraham — a high plain adjoining the city of Quebec, Canada: battlefield where the English under Wolfe defeated the French under Montcalm in 1759.
- point of purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- point-of-purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- poison-arrow frog — a small, bright-colored terrestrial frog of the family Dendrobatidae, of Central and South American rain forests, that secretes a virulent poison from its skin, once used on the tips of Indian hunting arrows.
- pre-manifestation — an act of manifesting.
- pre-modifications — an act or instance of modifying.
- prefect apostolic — the administrator, usually below the rank of bishop, in charge of a prefecture apostolic.
- preferential shop — a shop in which union members are preferred, usually by agreement of an employer with a union.
- procurator fiscal — In the Scottish legal system, the procurator fiscal is a public official who puts people on trial.
- professional army — an army of trained soldiers
- professional foul — In football, if a player commits a professional foul, they deliberately do something which is against the rules in order to prevent another player from scoring a goal.
- purple of cassius — a purple pigment precipitated as a sol by the interaction of gold chloride and a solution of stannic acid and stannous chloride: used chiefly in the manufacture of ruby glass, ceramic glazes, and enamels.
- pyrosulfuric acid — a strong, crystalline acid, H2S2O7, prepared commercially as a heavy, oily, fuming liquid: used in making explosives and dyes, as a sulfating agent, etc.
- recursion formula — a formula for determining the next term of a sequence from one or more of the preceding terms.
- rotation of crops — a system of rotating in a fixed order the kinds of crops, as grain or grass, grown in the same field, to maintain soil fertility
- rush-hour traffic — the large number of vehicles that move along roads, travelling to or from work at the beginning and end of the working day
- russian wolfhound — borzoi.
- sacrifice paddock — a grassed area allowed to be grazed completely, to be cultivated and resown later
- sacrificial anode — Chemistry. an anode that is attached to a metal object subject to electrolysis and is decomposed instead of the object.
- safety precaution — a precaution that is taken in order to ensure that something is safe and not dangerous
- saint elmo's fire — corona discharge.
- san francisco bay — a bay in W California: the harbor of San Francisco; connected with the Pacific by the Golden Gate strait. 50 miles (80 km) long; 3–12 miles (5–19 km) wide.
- scarlet firethorn — a Eurasian evergreen, thorny shrub, Pyracantha coccinea, of the rose family, having white, hairy flower clusters and bright red berries.
- self-appreciation — gratitude; thankful recognition: They showed their appreciation by giving him a gold watch.
- self-confirmation — the act of confirming.
- self-consecration — the act of setting oneself to a task or vocation without ordination by others or by a religious body.
- self-conservation — the act of conserving; prevention of injury, decay, waste, or loss; preservation: conservation of wildlife; conservation of human rights.
- self-presentation — an act of presenting.
- self-preservation — preservation of oneself from harm or destruction.
- self-purification — a natural process of purifying, as the ability of a body of water to rid itself of pollutants.
- self-renunciation — renunciation of one's own will, interests, etc.
- semi-professional — actively engaged in some field or sport for pay but on a part-time basis: semiprofessional baseball players.
- sidesaddle flower — a pitcher plant, Sarracenia purpurea.
- significant other — Sociology. a person, as a parent or peer, who has great influence on one's behavior and self-esteem.
- sister of charity — a member of one of several congregations of sisters founded in 1634 by St. Vincent de Paul.
- software engineer — a person who writes computer programs
- south farmingdale — a town on central Long Island, in SE New York.
- south west africa — a former name of Namibia.
- south-west africa — a former name of Namibia.
- sports facilities — places and things for doing sports
- standard function — a subprogram provided by a translator that carries out a task, for example the computation of a mathematical function, such as sine, square root, etc
- stannous fluoride — a white, crystalline powder, SnF 2 , slightly soluble in water: used as a source of fluorine in the prevention of dental caries, especially as a toothpaste additive.
- statue of liberty — a large copper statue, on Liberty Island, in New York harbor, depicting a woman holding a burning torch: designed by F. A. Bartholdi and presented to the U.S. by France; unveiled 1886.
- stock certificate — a certificate evidencing ownership of one or more shares of stock in a corporation.
- strait of otranto — a stretch of water between SE Italy and Albania, connecting the Adriatic Sea with the Ionian Sea; of strategic importance during World War I