13-letter words containing a, f, r
- fleet admiral — the highest ranking naval officer, ranking next above admiral.
- fleet air arm — the aviation branch of the Royal Navy
- flight leader — a pilot who commands a flight of military airplanes.
- flirtatiously — given or inclined to flirtation.
- float chamber — Automotive. the bowl-shaped section of a carburetor in which a reserve of fuel is maintained, the fuel level being regulated by a float.
- floating rate — fluctuating exchange rate
- floating ribs — the eleventh and twelfth pairs of ribs, not attached to the breastbone or to other ribs but only to the vertebrae
- floating roof — A floating roof is an internal roof of a fuel storage tank.
- floor furnace — a small self-contained furnace placed just below the floor of the space to be heated.
- floor manager — a person assigned to direct the proceedings on the floor of an assembly, as at a political convention.
- floor trading — trading by personal contact on the floor of a market or exchange
- flooring brad — a brad having a very small head, made in lengths from 2 to 4 inches (5 to 10 cm).
- floral emblem — a flower or plant serving as the emblem of a city, state, nation, etc.
- florianopolis — a state in S Brazil. 36,856 sq. mi. (95,455 sq. km). Capital: Florianópolis.
- floricultural — Of or pertaining to floriculture.
- floristically — In a floristic manner.
- flower garden — plot for flowers
- flowering ash — a variety of ash tree that produces conspicuous flowers
- fluid-extract — a liquid preparation, containing alcohol as a solvent or as a preservative, that contains in each cubic centimeter the medicinal activity of one gram of the crude drug in powdered form.
- flunitrazepam — a powerful benzodiazepine sedative, C 16 H 12 FN 3 O 3 , that causes semiconsciousness and memory blackouts: has been implicated in date rapes and is illegal in the U.S.
- fluoroacetate — a toxic chemical compound, C2H2FNaO2, occurring naturally in certain plants, and commonly used as rat poison
- fluorocarbons — Plural form of fluorocarbon.
- fluorographic — of or pertaining to fluorography
- fluoroplastic — any of the plastics, as Teflon, in which hydrogen atoms of the hydrocarbon chains are replaced by fluorine atoms.
- flutterboards — Plural form of flutterboard.
- fly fisherman — one who fishes by fly-casting
- flying boxcar — a large airplane designed to carry cargo.
- flying dragon — any of several arboreal lizards of the genus Draco, having an extensible membrane between the limbs along each side by means of which it makes long, gliding leaps.
- flying lizard — flying dragon.
- 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.
- folding chair — a chair that can be collapsed flat for easy storage or transport.
- fonctionnaire — a civil servant
- fool's errand — a completely absurd, pointless, or useless errand.
- foolhardiness — recklessly or thoughtlessly bold; foolishly rash or venturesome.
- foolheartedly — Foolishly. In a foolhardy manner. Without thinking about the consequences.
- foot-dragging — reluctance or failure to proceed or act promptly.
- for a kickoff — the beginning of something
- for chrissake — for Christ's sake
- for dear life — the condition that distinguishes organisms from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction, and the power of adaptation to environment through changes originating internally.
- for sb's part — When you are describing people's thoughts or actions, you can say for her part or for my part, for example, to introduce what a particular person thinks or does.
- for sb's sake — When you do something for someone's sake, you do it in order to help them or make them happy.
- for values of — (jargon) A common rhetorical maneuver at MIT is to use any of the canonical random numbers as placeholders for variables. "The max function takes 42 arguments, for arbitrary values of 42". "There are 69 ways to leave your lover, for 69 = 50". This is especially likely when the speaker has uttered a random number and realises that it was not recognised as such, but even "non-random" numbers are occasionally used in this fashion. A related joke is that pi equals 3 - for small values of pi and large values of 3. This usage probably derives from the programming language MAD (Michigan Algorithm Decoder), an ALGOL-like language that was the most common choice among mainstream (non-hacker) users at MIT in the mid-1960s. It had a control structure FOR VALUES OF X = 3, 7, 99 DO ... that would repeat the indicated instructions for each value in the list (unlike the usual FOR that generates an arithmetic sequence of values). MAD is long extinct, but similar for-constructs still flourish (e.g. in Unix's shell languages).
- for-instances — an instance or example: Give me a for-instance of what you mean.
- foramen ovale — the small, oval opening in the wall that separates the atria of the heart in a normal fetus: it allows blood to bypass the nonfunctioning fetal lungs until the time of birth when it gradually closes up
- foraminiferal — Of, pertaining to, or resembling the foraminifers; foraminiferous.
- foraminiferan — any chiefly marine protozoan of the sarcodinian order Foraminifera, typically having a linear, spiral, or concentric shell perforated by small holes or pores through which pseudopodia extend.
- force a smile — to make oneself smile
- force majeure — an unexpected and disruptive event that may operate to excuse a party from a contract.
- forced labour — labour done because of force; compulsory labour