13-letter words containing a, r, i, s
- filmographies — Plural form of filmography.
- fine adjuster — (jargon, tool, humour) A tool used for percussive maintenance, also known as a "hammer".
- finisher card — (in manufacturing fibers) the last card in the carding process, for converting stock into roving.
- fireside chat — an informal address by a political leader over radio or television, especially as given by President Franklin D. Roosevelt beginning in 1933.
- first baseman — the player whose position is first base.
- first chamber — the parliament of the Netherlands, consisting of an upper chamber (First Chamber) and a lower chamber (Second Chamber)
- first quarter — the instant, approximately one week after a new moon, when one half of the moon's disk is illuminated by the sun.
- first reading — the reading of a bill when it is first introduced in a legislative body.
- first refusal — If someone has first refusal on something that is being sold or offered, they have the right to decide whether or not to buy it or take it before it is offered to anyone else.
- first-aid kit — emergency medical set
- fish geranium — zonal geranium.
- fish hatchery — a facility where fish eggs are hatched and the fry raised, especially to stock lakes, streams, and ponds.
- flabergasting — Present participle of flabergast.
- flaming sword — a cultivated bromeliad, Vriesea splendens, native to French Guiana, having long, red bracts and yellow flowers.
- flash picture — a photograph made using flash photography.
- flavoproteins — Plural form of flavoprotein.
- flirtatiously — given or inclined to flirtation.
- floating ribs — the eleventh and twelfth pairs of ribs, not attached to the breastbone or to other ribs but only to the vertebrae
- florianopolis — a state in S Brazil. 36,856 sq. mi. (95,455 sq. km). Capital: Florianópolis.
- floristically — In a floristic manner.
- flowering ash — a variety of ash tree that produces conspicuous flowers
- fluoroplastic — any of the plastics, as Teflon, in which hydrogen atoms of the hydrocarbon chains are replaced by fluorine atoms.
- fly fisherman — one who fishes by fly-casting
- flying saucer — any of various disk-shaped objects allegedly seen flying at high speeds and altitudes, often with extreme changes in speed and direction, and thought by some to be manned by intelligent beings from outer space.
- focal seizure — an epileptic manifestation arising from a localized anomaly in the brain, as a small tumor or scar, and usually involving a single motor or sensory mechanism but occasionally spreading to other areas and causing convulsions and loss of consciousness.
- foolhardiness — recklessly or thoughtlessly bold; foolishly rash or venturesome.
- for chrissake — for Christ's sake
- for-instances — an instance or example: Give me a for-instance of what you mean.
- force a smile — to make oneself smile
- foreshadowing — to show or indicate beforehand; prefigure: Political upheavals foreshadowed war.
- formalisation — Alternative spelling of formalization.
- formularising — Present participle of formularise.
- formularistic — relating to formularization
- fort sheridan — a military reservation in NE Illinois, on W shore of Lake Michigan S of Lake Forest.
- fosamprenavir — (pharmaceutical drug) An anti-retroviral prodrug of the protease inhibitor amprenavir. It is used to treat HIV infected patients.
- fractionalise — Alt form fractionalize.
- fractionalism — the state of being separate or inharmonious
- fractionalist — an advocate or supporter of fractionalism
- fractiousness — refractory or unruly: a fractious animal that would not submit to the harness.
- franchisement — a privilege of a public nature conferred on an individual, group, or company by a government: a franchise to operate a bus system.
- francis bacon — Francis (Baron Verulam, Viscount St. Albans) 1561–1626, English essayist, philosopher, and statesman.
- francis crick — Francis Harry Compton, 1916–2004, English biophysicist: Nobel Prize in Medicine 1962.
- franz josef i — English name Francis Joseph I. 1830–1916, emperor of Austria (1848–1916) and king of Hungary (1867–1916)
- fraser island — an island off the south-east coast of Queensland and the largest sand island in the world; contains rainforests, heathlands, and freshwater lakes; a national park (since 1976) and a World Heritage site (since 1992). Area: 1840 sq km (710 sq miles). Pop: 194 (2011)
- free-standing — A free-standing piece of furniture or other object is not fixed to anything, or stands on its own away from other things.
- freudian slip — (in Freudian psychology) an inadvertent mistake in speech or writing that is thought to reveal a person's unconscious motives, wishes, or attitudes.
- friar's chair — frailero.
- frisches haff — a lagoon in N Poland. 52 miles (84 km) long; 4–12 miles (6–19 km) wide.
- frise aileron — an aircraft wing control surface designed with its leading edge extending forward of its axis of rotation so that when the aileron's trailing edge is raised the leading edge extends below the bottom surface of the wing.
- frobisher bay — an inlet of the Atlantic in NE Canada, in the SE coast of Baffin Island