12-letter words containing a, f, i, r
- profile drag — the sum of the surface friction drag and the form drag for a body moving subsonically through a fluid
- profile plan — a diagrammatic fore-and-aft elevation of the hull of a vessel, showing bow and buttock lines, stations, water lines, diagonals, decks, bulwarks, etc.
- prolifically — producing offspring, young, fruit, etc., abundantly; highly fruitful: a prolific pear tree.
- proofreading — correction of text
- purification — to make pure; free from anything that debases, pollutes, adulterates, or contaminates: to purify metals.
- putrefaction — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- putrefactive — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- qualificator — (in an ecclesiastical court) an officer charged with examining cases and preparing them for trial.
- quarterfinal — of or relating to the contest or round preceding the semifinal one.
- rabbit fever — tularemia.
- rabbitfishes — Plural form of rabbitfish.
- rachmaninoff — Sergei Wassilievitch [sur-gey vuh-seel-yuh-vich;; Russian syir-gyey vuh-syee-lyi-vyich] /sɜrˈgeɪ vəˈsil yə vɪtʃ;; Russian syɪrˈgyeɪ vʌˈsyi lyɪ vyɪtʃ/ (Show IPA), 1873–1943, Russian pianist and composer.
- radiant flux — the time rate of flow of radiant energy.
- radical left — the faction representing extreme left-wing political views, often Marxist or Maoist in ideology.
- rail traffic — the vehicles, passengers, or freight that are moving from place to place by railway
- rainbow fish — guppy.
- rainbow flag — a multicoloured flag used as a symbol of peace; often used to represent gay and lesbian pride
- rainbow roof — a gable roof in the form of a broad Gothic arch, with gently sloping convex surfaces.
- ramification — the act or process of ramifying.
- range finder — any of various instruments for determining the distance from the observer to a particular object, as for sighting a gun or adjusting the focus of a camera.
- rangefinding — the act or process of determining the distance of an object from the observer
- rat-infested — (of a place or vessel) that has many rats
- ratification — the act of ratifying; confirmation; sanction.
- reclassified — to classify anew.
- red bandfish — a fish, Cepola haastii, found on the inner continental shelf around New Zealand: family Cepolidae
- red goatfish — a goatfish, Mullus auratus.
- reflationary — economy: relating to reflation
- reformatting — the shape and size of a book as determined by the number of times the original sheet has been folded to form the leaves. Compare duodecimo, folio (def 2), octavo, quarto.
- refoundation — an act of refounding
- refractivity — the power to refract.
- refrigerated — made frozen or cold, esp for preservative purposes; chilled or frozen
- refrigerator — a box, room, or cabinet in which food, drink, etc., are kept cool by means of ice or mechanical refrigeration.
- relief angle — The relief angle is the angle between a cutting tool and the workpiece it has just cut.
- relief valve — a device that, when actuated by static pressure above a predetermined level, opens in proportion to the excess above this level and reduces the pressure to it. Compare safety valve (def 1).
- richard korf — (person) A Professor of computer science at the University of California, Los Angeles. Richard Korf received his B.S. from MIT in 1977, and his M.S. and Ph.D. in computer science from Carnegie-Mellon University in 1980 and 1983. From 1983 to 1985 he served as Herbert M. Singer Assistant Professor of Computer Science at Columbia University. Dr. Korf studies problem-solving, heuristic search and planning in artificial intelligence. He wrote "Learning to Solve Problems by Searching for Macro-Operators" (Pitman, 1985). He serves on the editorial boards of Artificial Intelligence, and the Journal of Applied Intelligence. Dr. Korf is the recipient of several awards and is a Fellow of the American Association for Artificial Intelligence.
- right of way — a common law or statutory right granted to a vehicle, as an airplane or boat, to proceed ahead of another.
- road traffic — traffic on the road
- roofing nail — a short nail for nailing asphalt shingles or the like, having a broad head.
- royal family — the immediate family of a reigning monarch.
- running gaff — the hoisting gaff.
- safari shirt — a shirt resembling a bush jacket.
- safe surfing — the practice of using security measures to protect one's computer while surfing the internet
- safecracking — the act of breaking into a safe
- saffron rice — a dish made from white rice and flavoured with the spice saffron
- salutiferous — salutary.
- sanguiferous — conveying blood, as a blood vessel.
- saronic gulf — an inlet of the Aegean, on the SE coast of Greece, between Attica and the Peloponnesus. 50 miles (80 km) long; 30 miles (48 km) wide.
- satin-flower — a Californian plant, Clarkia amoena, of the evening primrose family, having cup-shaped pink or purplish flowers blotched with red.
- satisfactory — giving or affording satisfaction; fulfilling all demands or requirements: a satisfactory solution.
- savoir faire — knowledge of just what to do in any situation; tact.