12-letter words containing a, l, i, f, o, r
- paraffin-oil — a white or colorless, tasteless, odorless, water-insoluble, solid substance not easily acted upon by reagents, consisting of a mixture of hydrocarbons chiefly of the alkane series, obtained from crude petroleum: used in candles, for forming preservative coatings and seals, for waterproofing paper, etc.
- parvifoliate — (of plants) having small leaves in comparison with the size of the stem
- pectoral fin — (in fishes) either of a pair of fins usually situated behind the head, one on each side, and corresponding to the forelimbs of higher vertebrates.
- pelecaniform — of, or having the nature of, an order (Pelecaniformes) of swimming birds having all four toes connected in a webbed foot, including pelicans and cormorants
- petaliferous — bearing or having petals.
- placentiform — shaped like a placenta, with a flat rounded form
- prairie fowl — prairie chicken.
- prairie wolf — coyote (def 1).
- prefectorial — of, relating to, or characteristic of a prefect: prefectorial powers.
- prefloration — the internal arrangement of a flower-bud's petals and sepals before it opens
- prefoliation — the arrangement of leaves within a vegetative bud
- professional — following an occupation as a means of livelihood or for gain: a professional builder.
- professorial — a teacher of the highest academic rank in a college or university, who has been awarded the title Professor in a particular branch of learning; a full professor: a professor of Spanish literature.
- 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.
- qualificator — (in an ecclesiastical court) an officer charged with examining cases and preparing them for trial.
- rainbow flag — a multicoloured flag used as a symbol of peace; often used to represent gay and lesbian pride
- reflationary — economy: relating to reflation
- 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.
- salutiferous — salutary.
- 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.
- silk factory — plant where silk fabric is produced
- solway firth — an arm of the Irish Sea between SW Scotland and NW England. 38 miles (61 km) long.
- stalactiform — resembling or shaped like a stalactite.
- subfactorial — the number of ways a group of objects can be arranged so that none of the objects are in their original or correct place
- tie-off rail — trim rail.
- to play fair — If you say that someone plays fair, you mean that they behave or act in a reasonable and honest way.
- trace fossil — a fossilized track, trail, burrow, boring, or other structure in sedimentary rock that records the presence or behavior of the organism that made it.
- trefoil arch — an arch with cusplike intrados.
- trifoliolate — having three leaflets, as a compound leaf.
- tubulifloral — (of a plant) tubuliflorous
- unforgivable — to grant pardon for or remission of (an offense, debt, etc.); absolve.
- unforgivably — in an unforgivable manner
- unformalized — not formalized
- unformidable — causing fear, apprehension, or dread: a formidable opponent.
- unifactorial — of or relating to a single gene.
- unprofitable — being without profit; not showing or turning a profit: a series of unprofitable ventures.
- waterfowling — the sport of shooting waterfowl
- wing formula — a numerical representation of the relative lengths of the primary feathers of a bird's wing, used in identifying similar species, as flycatchers.
- wolf-ferrari — Ermanno [er-mahn-naw] /ɛrˈmɑn nɔ/ (Show IPA), 1876–1948, Italian composer.
- world's fair — a large international exposition with exhibitions of arts, crafts, industrial and agricultural products, scientific achievements, etc.