13-letter words containing f, e, a, r, l
- 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
- flutterboards — Plural form of flutterboard.
- 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.
- 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.
- 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 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).
- 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.
- force a smile — to make oneself smile
- forced labour — labour done because of force; compulsory labour
- formal review — (project) A technical review conducted with the customer including the types of reviews called for in DOD-STD-2167A (Preliminary Design Review, Critical Design Review, etc.)
- formal system — an uninterpreted symbolic system whose syntax is precisely defined, and on which a relation of deducibility is defined in purely syntactic terms; a logistic system
- formal theory — an uninterpreted symbolic system whose syntax is precisely defined, and on which a relation of deducibility is defined in purely syntactic terms; a logistic system
- fort campbell — a military reservation in SW Kentucky and NW Tennessee, NW of Clarksville, Tenn., and SW of Hopkinsville, Ky.
- forward delta — The delta which, when combined with a version, creates a child version. See change management
- fowler's toad — an eastern U.S. toad, Bufo woodhousii fowleri, having an almost patternless white belly.
- fractionalise — Alt form fractionalize.
- fractionalize — Divide (someone or something) into separate groups or parts.
- fragmentarily — consisting of or reduced to fragments; broken; disconnected; incomplete: fragmentary evidence; fragmentary remains.
- frank whittle — Sir Frank, 1907–96, English engineer and inventor.
- frankenthaler — Helen, 1928–2011, U.S. painter.
- franklin tree — a deciduous tree, Franklinia alatamaha, having large, white, fragrant flowers, one of the rarest trees in the world, once native only to Georgia and now known only in cultivation.
- 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)
- freckle-faced — having a face conspicuously covered with freckles.
- free enthalpy — a thermodynamic property of a system equal to the difference between its enthalpy and the product of its temperature and its entropy. It is usually measured in joules
- free variable — (in functional calculus) a variable occurring in a sentential function and not within the scope of any quantifier containing it.
- free-floating — (of an emotional state) lacking an apparent cause, focus, or object; generalized: free-floating hostility.
- freight plane — an aeroplane used to transport goods
- 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.
- 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.
- frosted glass — etched glass with a translucent surface
- fuel air bomb — a type of bomb that spreads a cloud of gas, which is then detonated, over the target area, causing extensive destruction
- fulani empire — a powerful W African Muslim state that flourished in the 19th century in the area of present-day Nigeria.
- full-flavored — Full-flavored food or wine has a pleasant fairly strong taste.
- full-throated — A full-throated sound coming from someone's mouth, such as a shout or a laugh, is very loud.
- funeral march — march played for funeral processions
- gabriel fauré — Gabriel Urbain [ga-bree-el oor-ban] /ga briˈɛl urˈbɛ̃/ (Show IPA), 1845–1924, French composer.
- gallimaufries — Plural form of gallimaufry.
- gallows frame — headframe.
- garrison life — the life of troops who maintain and guard a military base or fortified place
- gelandelaufer — a participant in cross-country skiing.
- general staff — a group of officers who are without command and whose duty is to assist high commanders in planning and carrying out orders in peace and war.