15-letter words containing f, l, s
- fluorochemicals — Plural form of fluorochemical.
- fluorophosphate — a salt or ester of a fluorophosphoric acid.
- fly honeysuckle — either of two honeysuckle shrubs, Lonicera canadensis, of eastern North America, or L. xylosteum, of Eurasia, having paired yellowish flowers tinged with red.
- flying buttress — a segmental arch transmitting an outward and downward thrust to a solid buttress that through its inertia transforms the thrust into a vertical one.
- flying fortress — a heavy bomber, the B-17, with four radial piston engines, widely used over Europe and the Mediterranean by the U.S. Air Force in World War II.
- flying squirrel — any of various nocturnal tree squirrels, as Glaucomys volans, of the eastern U.S., having folds of skin connecting the fore and hind legs, permitting long, gliding leaps.
- follow-up study — a second study made as a follow-up to an initial study
- follow-up visit — a visit made as a follow-up to an initial visit
- food supplement — a substance designed to make up for a deficiency in one's diet
- fool's paradise — a state of enjoyment based on false beliefs or hopes; a state of illusory happiness.
- foolscap octavo — a book size, 41⁄4 by 63⁄4 inches
- foolscap quarto — a book size, 63⁄4 by 81⁄2 inches (foolscap quarto)
- football season — annual period when soccer is played
- forecastle deck — a partial weather deck on top of a forecastle superstructure; topgallant forecastle.
- forecastle head — the extreme fore part of a forecastle superstructure.
- formal calculus — 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
- formation rules — the set of rules that specify the syntax of a formal system; the algorithm that generates the well-formed formulae
- foul one's nest — grossly offensive to the senses; disgustingly loathsome; noisome: a foul smell.
- foundationalism — (epistemology) The doctrine that beliefs derive justification from certain basic beliefs.
- fovea centralis — a small pit or depression at the back of the retina forming the point of sharpest vision.
- franklin square — a town on W Long Island, in SE New York.
- franklin's gull — a black-headed North American gull, Larus pipixcan, feeding chiefly on insects.
- fraternal twins — one of a pair of twins, not necessarily resembling each other, or of the same sex, that develop from two separately fertilized ova.
- free soil party — a former U.S. political party (1848–56) that opposed the extension of slavery in the Territories not yet admitted to statehood.
- fresnel biprism — biprism.
- fresnel mirrors — two plane mirrors so linked that a beam of light falling on them is reflected in slightly different directions, thus producing interference fringes in the area where this reflected light overlaps
- friar's lantern — ignis fatuus (def 1).
- fringe festival — an unofficial, often unconventional, arts festival that is associated with another, larger festival
- frisian islands — a chain of islands in the North Sea along the coasts of the Netherlands, Germany, and Denmark: separated from the mainland by shallows
- frozen shoulder — joint stiffness at top of arm
- fulfill oneself — to realize completely one's ambitions, potentialities, etc.
- full of oneself — full of pride or conceit; egoistic
- fuller's teasel — a Eurasian teasel plant, Dipsacus fullonum, whose prickly flower heads are used for raising the nap on woollen cloth
- fully fashioned — (of stockings, knitwear, etc) shaped and seamed so as to fit closely
- functionalistic — of or relating to a function or functions: functional difficulties in the administration.
- functionalities — of or relating to a function or functions: functional difficulties in the administration.
- fundamentalists — Plural form of fundamentalist.
- fundamentalness — The state or condition of being fundamental; essential importance.
- funeral service — ceremony at a burial or cremation
- fungistatically — in a fungistatic manner
- fusospirillosis — (medicine) alternative name of acute necrotizing ulcerative gingivitis.
- fusospirochetal — Relating to fusospirochetes.
- futilitarianism — The belief that all human activity is futile.
- gatefold sleeve — a record sleeve that opens out like a book
- gesneria family — the plant family Gesneriaceae, characterized by herbaceous plants having a basal rosette of usually toothed leaves, tubular two-lipped flowers, and fruit in the form of a berry or capsule, and including the African violet, gloxinia, and streptocarpus.
- get hold of sth — If you get hold of an object or information, you obtain it, usually after some difficulty.
- ghetto fabulous — pertaining to or noting a lifestyle of showy but superficial glamour and luxury that is sometimes adopted by people in or from an urban ghetto: That man is just ghetto-fabulous; his bling wears bling!
- ghetto-fabulous — pertaining to or noting a lifestyle of showy but superficial glamour and luxury that is sometimes adopted by people in or from an urban ghetto: That man is just ghetto-fabulous; his bling wears bling!
- giant sunflower — a composite plant, Helianthus giganteus, of eastern North America, growing nearly 12 feet (4 meters) high and having very large yellow flower heads.
- go up in flames — be burned