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flower people
flower children. [1965-70] * * *
flower power
n [U] the beliefs of the flower children in the 1960s that peace and love were more important than military and commercial activities, and that if enough people shared their ...
Flower, Lucy Louisa Coues
▪ American welfare worker née  Lucy Louisa Coues  born May 10, 1837, probably Boston, Mass., U.S. died April 27, 1921, Coronado, Calif.       American welfare ...
Flower, Sir William Henry
▪ British zoologist born November 30, 1831, Stratford upon Avon, Warwickshire, England died July 1, 1899, London  British zoologist who made valuable contributions to ...
/flow"euhr deuh loohs"/, n. the iris flower or plant. [1630-40; Anglicization of F fleur de lis] * * *
☆ flower-of-an-hour [flou′ərəv ən our′ ] n. a weedlike annual plant (Hibiscus trionum) of the mallow family, having yellow or white flowers with dark centers * * *
/flow"euhr euhv johv"/, n., pl. flowers-of-Jove. a white, woolly plant, Lychnis flos-jovis, of the pink family, having red or purple flowers in dense clusters. [trans. of NL ...
/flow"euhr ij/, n. the process or state of flowering. [1680-90; FLOWER + -AGE] * * *
flower bud n. A bud that will develop into a flower. * * *
flower bug n. Any of a group of bugs in the family Anthocoridae, which feed on insects that infest flowers. * * *
flower child n. Informal A hippie, especially one advocating universal peace and love as antidotes to social or political ills.   [From the custom of carrying or wearing flowers ...
/flow"euhrd/, adj. 1. having flowers. 2. decorated with flowers or a floral pattern: a flowered dress. [1300-50; ME; see FLOWER, -ED3] * * *
/flow"euhr euhr/, n. a plant that flowers at a specific time or in a certain manner. [1850-55; FLOWER + -ER1] * * *
/flow"euhr it/, n. a small flower; floret. [1350-1400; ME, var. of FLORET] * * *
flower girl n. A young girl who carries flowers in a procession, especially at a wedding. * * *
flower head n. 1. A dense, short, compact cluster of sessile flowers, as of composite plants or clover. Also called capitulum. 2. A very dense grouping of flower buds, as in ...
See flowery. * * *
/flow"euhr ing/, adj. bearing flowers. [1250-1300; ME; see FLOWER, -ING2] * * *
flowering crab
flowering crab n. any of several species and varieties of crab apple trees with small fruits and abundant spring flowers ranging from white to reddish purple * * *
flowering dogwood
a North American dogwood tree, Cornus florida, having small greenish flowers in the spring, surrounded by white or pink bracts that resemble petals: the state flower and the ...
flowering flax
a plant, Linum grandiflorum, of northern Africa, having quickly fading, red or pink flowers. * * *
flowering maple
any of various shrubs belonging to the genus Abutilon, of the mallow family, having large, bright-colored flowers. * * *
flowering moss
pyxie. [1855-60] * * *
flowering plant
a plant that produces flowers, fruit, and seeds; angiosperm. [1860-65] * * * Any of the more than 250,000 species of angiosperms (division Magnoliophyta) having roots, stems, ...
flowering quince
any shrub belonging to the genus Chaenomeles, of the rose family, native to eastern Asia, having showy, waxy flowers and a quincelike fruit, grown widely as an ornamental. * * ...
flowering raspberry
a shrub, Rubus ordoratus, of eastern North America, having loose clusters of showy purplish or rose-purple flowers and inedible, dry, red fruit. [1805-15] * * *
flowering rush
▪ plant       perennial freshwater plant native to Eurasia, now common throughout the north temperate zone. B. umbellatus is the only species of the family ...
flowering tobacco
any plant belonging to the genus Nicotiana, of the nightshade family, as N. alata and N. sylvestris, having clusters of fragrant flowers that usually bloom at night, grown as an ...
flowering wintergreen.
See fringed polygala. [1810-20, Amer.] * * *
flow·er·ing dogwood (flouʹər-ĭng) n. See dogwood. * * *
flowering maple n. Any of various tropical plants of the genus Abutilon, having lobed leaves resembling those of the maple and variously colored flowers. Also called abutilon, ...
flowering plant n. A plant that produces flowers and fruit; an angiosperm. * * *
flowering quince n. Any of several shrubs of the genus Chaenomeles, native to Asia and having spiny branches and red or pink flowers. * * *
flowering wintergreen n. See fringed polygala. * * *
—flowerlessness, n. /flow"euhr lis/, adj. 1. having or producing no flowers. 2. Bot. having no true seeds; cryptogamic. [1490-1500; FLOWER + -LESS] * * *
/flow"euhr lit/, n. a small flower; floret. [FLOWER + -LET] * * *
/flow"euhr luyk'/, adj. resembling or in the shape of a flower; delicate; graceful. [FLOWER + -LIKE] * * *
/flow"euhr pek'euhr/, n. any of numerous small, arboreal, usually brightly colored oscine birds of the family Dicaeidae, of southeastern Asia and Australia. [1880-85; FLOWER + ...
flower people pl.n. Informal Flower children. * * *
/flow"euhr pot'/, n. a container in which to grow and display plants. [1590-1600; FLOWER + POT1] * * *
flowers of sulfur
Pharm. sublimed sulfur in the form of a fine yellow powder, used in medicine chiefly to kill parasites and fungi and to treat certain skin diseases. * * *
flowers of tan
a common slime mold, Fuligo septica, of the central and eastern U.S., having large sporophores and yellowish, foamy plasmodia, that during a wet growing season may spread to ...
flowers of zinc.
See zinc oxide. * * *
Flowers, Thomas Harold
▪ 1999       British engineer who led the developers of Colossus, one of the first electronic digital computers, which broke complex codes used by the Germans during ...
—flowerily, adv. —floweriness, n. /flow"euh ree/, adj., flowerier, floweriest. 1. covered with or having many flowers. 2. decorated with floral designs. 3. rhetorically ...
—flowingly, adv. —flowingness, n. /floh"ing/, adj. 1. moving in or as in a stream: flowing water. 2. proceeding smoothly or easily; facile: flowing language. 3. long, smooth, ...
flowing tracery
Archit. See curvilinear tracery. * * *
See flow. * * *
/floh"mee'teuhr/, n. an instrument for measuring the flow rate of a fluid in a pipe. [1915-20; FLOW + -METER] * * *
flown1 /flohn/, v. a pp. of fly1. flown2 /flohn/, adj. 1. decorated with colors that have been fluidly blended: flown ceramic ware. 2. Archaic. filled to excess. [ME flowen; ptp. ...
flow sheet n. See flow chart. * * *
/floh"stohn'/, n. Petrol. a layered deposit of calcium carbonate, CaCO3, left by thin sheets of flowing water, as in a cave. Cf. dripstone. [1920-25, Amer.; FLOW + STONE] * * ...
/floyd/, n. 1. Carlisle (Sessions, Jr.), born 1926, U.S. composer, esp. of operas. 2. a male given name, form of Lloyd. * * *
Floyd, John Buchanan
▪ American politician born June 1, 1806, Montgomery county, Va., U.S. died Aug. 26, 1863, Abingdon, Va.  American politician who served as governor of Virginia, secretary of ...
Floyd, Pretty Boy
▪ American gangster byname of  Charles Arthur Floyd   born Feb. 3, 1904, Bartow County, Ga., U.S. died Oct. 22, 1934, near East Liverpool, Ohio       American gunman ...
Federal Labor Relations Authority. * * *
FLSA abbrev. Fair Labor Standards Act * * *
flt abbrev. flight * * *
/flooh/, n. 1. influenza. 2. a specific variety of influenza, usually named for its point of dissemination or its animal vector: Hong Kong flu; swine flu. [1830-40; shortened ...
/flub/, v., flubbed, flubbing, n. v.t., v.i. 1. to perform poorly; blunder; bungle: He flubbed the last shot and lost the match. n. 2. a blunder. [1920-25, Amer.; orig. ...
See flub. * * *
/flub"dub'/, n. pretentious nonsense or show; airs. [1885-90, Amer.; orig. uncert.] * * *
Fluckey, Eugene Bennett
▪ 2008       rear adm. (ret.), U.S. Navy born Oct. 5, 1913, Washington, D.C. died June 29, 2007 , Annapolis, Md. was the daring submarine commander during World War II ...
flu·con·a·zole (flo͞o-kŏnʹə-zōl', -kōʹnə-) n. A broad-spectrum antifungal agent administered either orally or by injection and used especially to treat fungal ...
/fluk"chooh euhnt/, adj. 1. fluctuating; varying; unstable. 2. undulating; moving or seeming to move in waves. [1550-60; < L fluctuant- (s. of fluctuans) (prp. of fluctuare to ...
/fluk"chooh ayt'/, v., fluctuated, fluctuating. v.i. 1. to change continually; shift back and forth; vary irregularly: The price of gold fluctuated wildly last month. 2. to move ...
/fluk'chooh ay"sheuhn/, n. 1. continual change from one point or condition to another. 2. wavelike motion; undulation. 3. Genetics. a body variation due to environmental factors ...
/flooh suy"teuh seen'/, n. Pharm. a synthetic whitish crystalline powder, C4H4FN3O, with antifungal activity, used in the treatment of systemic and eye fungal infections caused ...
Fludd, Robert
▪ British physician and philosopher Fludd also spelled  Flud,  Latin  Robertus De Fluctibus  born 1574, Bearsted, Kent, Eng. died Sept. 8, 1637, London  British ...
flu·dro·cor·ti·sone (flo͞o'drō-kôrʹtĭ-sōn', -zōn') n. A synthetic steroid used therapeutically to increase blood pressure by lowering the amount of salt the body ...
flue1 /flooh/, n. 1. a passage or duct for smoke in a chimney. 2. any duct or passage for air, gas, or the like. 3. a tube, esp. a large one, in a fire-tube boiler. 4. Music. a. ...
flue pipe
an organ pipe having a flue. [1850-55] * * *
flue stop
a rank of flue pipes in an organ. [1850-55] * * *
/flooh"kyoor'/, v.t., flue-cured, flue-curing. to dry or cure by warm air that has been passed through flues. [1905-10] * * *
☆ flue-cured [flo͞o′kyoord′ ] adj. cured or dried by hot air passed through flues: said of tobacco * * *
fluegelhorn or flügelhorn [flo͞o′gəl hôrn΄] n. 〚Ger < flügel, wing < horn, horn: because of shape〛 a brass instrument like the cornet in design and pitch but with a ...
fluency [flo͞o′ən sē] n. 〚LL fluentia < L fluens: see FLUENT〛 the quality or condition of being fluent, esp. in speech or writing * * * See fluent. * * *
—fluency, fluentness, n. —fluently, adv. /flooh"euhnt/, adj. 1. spoken or written with ease: fluent French. 2. able to speak or write smoothly, easily, or readily: a fluent ...
See fluency. * * *
flue pipe n. Music An organ pipe with a lipped opening; a flue. * * *
—flueric, adj. /flooh er"iks/, n. (used with a sing. v.) Engin. fluidics. [appar. irreg. < L fluer(e) to flow + -ICS] * * *
flue stop n. Music An organ stop controlling a set of flue pipes. * * *
—fluffer, n. /fluf/, n. 1. light, downy particles, as of cotton. 2. a soft, light, downy mass: a fluff of summer clouds. 3. something of no consequence: The book is pure fluff, ...
See fluffy. * * *
See fluffily. * * *
—fluffily, adv. —fluffiness, n. /fluf"ee/, adj., fluffier, fluffiest. 1. of, resembling, or covered with fluff. 2. light or airy: a fluffy cake. 3. having little or no ...
—flügelhornist, flugelhornist, fluegelhornist, n. /flooh"geuhl hawrn'/; Ger. /flyuu"geuhl hawrddn'/, n. a brass wind instrument with three valves, usually pitched in B flat ...
See flugelhorn. * * *
/flooh"geuhl meuhn/, n., pl. flugelmen. fugleman. * * *
—fluidal, adj. —fluidly, fluidally, adv. —fluidness, n. /flooh"id/, n. 1. a substance, as a liquid or gas, that is capable of flowing and that changes its shape at a steady ...
fluid coupling
Mach. an apparatus in which a fluid, usually oil, transmits torque from one shaft to another, producing an equal torque in the other shaft. Also called hydraulic coupling. Cf. ...
fluid dram
the eighth part of a fluid ounce. Abbr.: fl dr. Also, fluid drachm. * * *
fluid drive
Auto. a power coupling for permitting a smooth start in any gear, consisting of two vaned rotors in a sealed casing filled with oil, such that one rotor, driven by the engine, ...
fluid dynamics
the branch of fluid mechanics dealing with the properties of fluids in motion. * * *
fluid mechanics
an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940-45] * * * Study of the effects of forces and energy on liquids and ...
fluid ounce
a measure of capacity equal to 1/16 pint or 1.8047 cubic inches (29.573 milliliters) in the U.S., and equal to 1/20 of an imperial pint, or 1.7339 cubic inches (28.413 ...
fluid pressure
Physics, Mech. the pressure exerted by a fluid, directly proportional to the specific gravity at any point and to the height of the fluid above the point. [1835-45] * * *
fluid dram n. Abbr. fl. dr. A unit of volume or capacity in the apothecary system, equal to 1/8 of a fluid ounce (3.70 milliliters). * * *
fluid drive n. An automotive transmission coupling that provides a smooth start, consisting of two separate turbines that rotate on the same axis in a surrounding liquid, such ...
fluid dynamics n. (used with a sing. verb) The branch of applied science that is concerned with the movement of gases and liquids. * * *
/flooh"id ek"strakt/, n. Pharm. a liquid preparation, containing alcohol as a solvent or as a preservative, that contains in each cubic centimeter the medicinal activity of one ...
flu·id·ic (flo͞o-ĭdʹĭk) adj. 1. Of, relating to, or characteristic of a fluid. 2. Relating to or controlled by fluidics. * * *
—fluidic, adj. /flooh id"iks/, n. (used with a sing. v.) the technology dealing with the use of a flowing liquid or gas in various devices, esp. controls, to perform functions ...
/flooh id"i tee/, n. 1. the quality or state of being fluid. 2. Physics. a. the ability of a substance to flow. b. a measure of this ability, the reciprocal of the coefficient of ...
See fluidize. * * *
—fluidization, n. —fluidizer, n. /flooh"i duyz'/, v., fluidized, fluidizing. v.t. 1. to make (something) fluid. 2. Chem. to suspend or transport (finely divided particles) in ...
fluidized-bed [flo͞o′ə dīzd΄bed′] adj. designating, of, or having to do with a process for burning coal, garbage, etc. to produce electricity, using a rising stream of ...
See fluidity. * * *
fluid mechanics n. (used with a sing. verb) The branch of mechanics that is concerned with the properties of gases and liquids. * * *
See fluidity. * * *
fluid ounce n. Abbr. fl. oz. 1. A unit of volume or capacity in the U.S. Customary System, used in liquid measure, equal to 29.57 milliliters (1.804 cubic inches). 2. A unit of ...
fluish [flo͞o′ish] adj. having flulike symptoms * * *
fluke1 /floohk/, n. 1. the part of an anchor that catches in the ground, esp. the flat triangular piece at the end of each arm. See diag. under anchor. 2. a barb, or the barbed ...
/flooh"kee/, adj., flukier, flukiest. fluky. * * *
See fluky. * * *
See flukily. * * *
—flukiness, n. /flooh"kee/, adj., flukier, flukiest. 1. obtained by chance rather than skill. 2. uncertain, as a wind. [1865-70; FLUKE2 + Y1] * * *
/flum'euh did"l, flum"euh did'l/, n. 1. utter nonsense. 2. worthless frills. Also, fumadiddle. [1840-50, Amer.; appar. FLUM(MERY) + -a- unstressed linking vowel + DIDDLE2] * * *
/floohm/, n., v., flumed, fluming. n. 1. a deep narrow defile containing a mountain stream or torrent. 2. an artificial channel or trough for conducting water, as one used to ...
Flumendosa River
▪ river, Italy Italian  Fiume Flumendosa,         river that rises in the Gennargentu Mountains in southeastern Sardinia, Italy, and flows 79 miles (127 km) west and ...
/flum"euh ree/, n., pl. flummeries. 1. oatmeal or flour boiled with water until thick. 2. fruit custard or blancmange usually thickened with cornstarch. 3. any of various dishes ...
/flum"euhks/, v.t. Informal. to bewilder; confound; confuse. [1830-40; orig. uncert.] * * *
/flump/, v.i., v.t. 1. to plump down suddenly or heavily; flop. n. 2. the act or sound of flumping. [1810-20; b. of FLOP + PLUMP] * * *
/flung/, v. pt. and pp. of fling. * * *
/flooh'ni traz"euh pam'/, n. Pharm. See under Rohypnol. * * *
/flungk/, v.i. 1. to fail in a course or examination. 2. flunk out, to fail and be unable to continue in: He flunked out of flight school. v.t. 3. to fail to get a passing mark ...
flunk out
➡ student life * * *
See flunk. * * *
—flunkeyism, n. /flung"kee/, n., pl. flunkeys. flunky. * * *
/flungk"owt'/, n. a person who has flunked out of school or a course. [n. use of v. phrase flunk out] * * *
—flunkyism, n. /flung"kee/, n., pl. flunkies. 1. a male servant in livery. 2. an assistant who does menial work. 3. a toady; yes-man. Also, flunkey. [1775-85; perh. alter. of ...
See flunky. * * *
var. of fluoro-: fluoboric. * * *
/flooh'euh bawr"ayt, -it, -bohr"-/, n. Chem. a salt of fluoboric acid. [FLUO- + BORATE] * * *
/flooh'euh bawr"ik, -bohr"-/, adj. Chem. containing the univalent group BF4-. [1805-15; FLUO- + BORIC] * * *
fluoboric acid
Chem. a clear, colorless liquid, HBF4, that ionizes abundantly in solution, used chiefly in the synthesis of fluoborates. [1810-20] * * *
/flooh'euh fos"fayt/, n. Chem. fluorophosphate. * * *
fluophosphoric acid
/flooh"oh fos fawr"ik, -for"-, flooh'-/, Chem. See fluorophosphoric acid. * * *
/flooh"awr, -euhr/, n. Mineral. fluorite. [1615-25; < L fluor a flowing; so called from its use as a flux] * * *
var. of fluoro- before a vowel: fluorene; fluoric. * * *
/floor ap"euh tuyt', flawr-, flohr-/, n. a crystalline mineral, Ca5(PO4)3F, formed from hydroxyapatite in the presence of fluoride, that has a hardening effect on bones and ...
/floor"een, -in, flawr"-, flohr"-/, n. Chem. a white, crystalline, water-insoluble solid, C13H10, used chiefly in the manufacture of resins and dyes. [1880-85; < F; see FLUOR-, ...
—fluorescer, n. /floo res", flaw-, floh-/, v.i., fluoresced, fluorescing. to exhibit fluorescence. [1870-75; back formation from FLUORESCENCE] * * *
/floo res"ee in, flaw-, floh-/, n. Chem. an orange-red, crystalline, water-insoluble solid, C20H12O5, that in alkaline solutions produces an orange color and an intense green ...
/floo res"euhns, flaw-, floh-/, n. Physics, Chem. 1. the emission of radiation, esp. of visible light, by a substance during exposure to external radiation, as light or x-rays. ...
fluorescence in situ hybridization
▪ medicine       technique that employs fluorescent probes for the detection of specific deoxyribonucleic acid ( DNA) sequences in chromosomes (chromosome). FISH has a ...
fluorescence photography
      process that records the glow or visible light given off by certain substances when they are irradiated by ultraviolet (ultraviolet radiation) rays. The exclusively ...
fluorescence-activated cell sorter
/floo res"euhns ak'ti vay'tid, flaw-, floh-/. See FACS. * * *
/floo res"euhnt, flaw-, floh-/, adj. 1. possessing the property of fluorescence; exhibiting fluorescence. 2. strikingly bright, vivid, or glowing: plastic toys in fluorescent ...
fluorescent lamp
a tubular electric discharge lamp in which light is produced by the fluorescence of phosphors coating the inside of the tube. [1895-1900] * * * Type of electric discharge lamp ...
fluorescent lamp Precision Graphics n. A lamp that produces visible light by fluorescence, especially a glass tube whose inner wall is coated with a material that fluoresces ...
See fluoresce. * * *
/flooh awr"ik, -or"-/, adj. 1. Chem. pertaining to or obtained from fluorine. 2. Mineral. of, pertaining to, or derived from fluorite. [1780-90; < F fluorique. See FLUOR-, -IC] * ...
/floor"i dayt', flawr"-, flohr"-/, v.t., fluoridated, fluoridating. to introduce a fluoride into: to fluoridate drinking water. [1945-50; back formation from FLUORIDATION] * * *
/floor'i day"sheuhn, flawr'-, flohr'-/, n. the addition of fluorides to the public water supply to reduce the incidence of tooth decay. [1900-05; FLUORIDE + -ATION] * * *
fluoridation of water
Addition of fluoride compounds to water (see fluorine) at one part per million to reduce dental caries (cavities). This practice is based on the lower rates of caries seen in ...
/floor"uyd, flawr"-, flohr"-/, n. Chem. 1. a salt of hydrofluoric acid consisting of two elements, one of which is fluorine, as sodium fluoride, NaF. 2. a compound containing ...
fluoride deficiency
▪ pathology       condition in which fluoride is insufficient or is not utilized properly. Fluoride is a mineral stored in teeth and bones that strengthens them by ...
—fluoridization, n. /floor"i duyz', flawr"-, flohr"-/, v.t., fluoridized, fluoridizing. to treat, impregnate, or affect with a fluoride. Also, esp. Brit., fluoridise. [1935-40; ...
/floo rim"i teuhr, flaw-, floh-/, n. fluorometer. * * *
—fluorination, n. /floor"euh nayt', flawr"-, flohr"-/, v.t., fluorinated, fluorinating. Chem. to treat or combine with fluorine. [1930-35; FLUORINE + -ATE1] * * *
fluor·i·na·tion (flo͝or'ĭ-nāʹshən, flôr'-, flōr'-) n. A chemical reaction that introduces fluorine into a compound. * * *
/floor"een, -in, flawr"-, flohr"-/, n. Chem. the most reactive nonmetallic element, a pale-yellow, corrosive, toxic gas that occurs combined, esp. in fluorite, cryolite, ...
fluorine dating
a method of determining the relative age of fossil bones found in the same excavation by comparing their fluorine content. [1945-50] * * *
/floor"uyt, flawr"-, flohr"-/, n. a common mineral, calcium fluoride, CaF2, occurring in green, blue, purple, yellow, or colorless crystals, usually in cubes: the principal ...
1. a combining form with the meanings "fluorine," "fluoride," used in the formation of compound words: fluorocarbon. 2. a combining form with the meaning "fluorescence," used in ...
/floor'oh kahr'beuhn, flawr"-, flohr"-/, n. Chem. any of a class of compounds produced by substituting fluorine for hydrogen in a hydrocarbon, and characterized by great chemical ...
fluor·o·chem·i·cal (flo͝orʹō-kĕm'ĭ-kəl, flôrʹ-, flōrʹ-) n. A chemical compound containing fluorine, especially a fluorocarbon. * * *
/floor"euh krohm', flawr"-, flohr"-/, n. Histol. any of a group of fluorescent dyes used to label biological material. [FLUORO- + -CHROME] * * *
/floo rog"reuh fee, flaw-, floh-/, n. photofluorography. [1940-45; FLUORO- + -GRAPHY] * * *
—fluorometric /floor'euh me"trik, flawr'euh-, flohr'euh-/, adj. —fluorometry, n. /floo rom"i teuhr, flaw-, floh-/, n. an instrument for measuring fluorescence, often as a ...
See fluorometer. * * *
/floor'oh fos"fayt, flawr'-, flohr'-/. n. Chem. a salt or ester of a fluorophosphoric acid. Also, fluophosphate. [FLUORO- + PHOSPHATE] * * *
fluorophosphoric acid
/floor"oh fos fawr"ik, -for"-, flawr"-, flohr"-, floor'oh-, flawr'-, flohr'-/, Chem. any of three acids containing fluorine and phosphorus, HPF6, HPO2F2, or H2PO3F. Also, ...
/floor'euh plas"tik, flawr'-, flohr'-/, n. Chem. any of the plastics, as Teflon, in which hydrogen atoms of the hydrocarbon chains are replaced by fluorine atoms. Also called ...
fluor·o·quin·o·lone (flo͝or'ə-kwĭnʹə-lōn', flôr'-, flōr'-) n. Any of a group of broad-spectrum antibiotics derived from nalidixic acid.   [fluoro- + quinoline + ...
/floor"euh skohp', flawr"-, flohr"-/, n. a tube or box fitted with a screen coated with a fluorescent substance, used for viewing objects, esp. deep body structures, by means of ...
—fluoroscopically, adv. /floor'euh skop"ik, flawr'-, flohr'-/, adj. of or pertaining to the fluoroscope or fluoroscopy. [1895-1900; FLUOROSCOPE + -IC] * * *
See fluoroscopic. * * *
See fluoroscopy. * * *
—fluoroscopist, n. /floo ros"keuh pee, flaw-, floh-/, n. the use of or examination by means of a fluoroscope. [1895-1900; FLUORO- + -SCOPY] * * *
/floo roh"sis, flaw-, floh-/, n. Pathol. 1. an abnormal condition caused by excessive intake of fluorides, characterized in children by discoloration and pitting of the teeth and ...
See fluorosis. * * *
/floor'euh yoor"euh sil, flawr'-, flohr'-/, n. Pharm. a pyrimidine analog, C4H3FN2O2, used in the treatment of certain cancers. [FLUORO- + URACIL] * * *
/flooh"awr spahr', -euhr-/, n. Mineral. fluorite. Also, fluor spar. [1785-95; FLUOR- + SPAR3] * * *
/flooh'euh sil"i kit, -kayt'/, n. Chem. a salt of fluosilicic acid. [FLUO- + SILICATE] * * *
fluosilicic acid
/flooh"oh si lis"ik, flooh'-/, Chem. an unstable acid, H2SiF6, known only in its colorless, poisonous, fuming aqueous solution or in the form of its salts: used chiefly as a wood ...
fluoxetine hydrochloride
/flooh ok"si teen'/, Pharm. a white crystalline compound, C17H18F3NO·HCl: inhibits the uptake of serotonin and is used chiefly as an antidepressant. * * *
flu·ox·e·tine hydrochloride (flo͞o'ŏkʹsĭ-tēn') n. An oral antidepressant that enhances the activity of serotonin by inhibiting its uptake by neurons of the central ...
/flooh fen"euh zeen'/, n. Pharm. a potent tranquilizer, C22H26F3N3OS, derived from phenothiazine and used in various forms for the management of certain neurological or psychotic ...
/floo raz"euh pam'/, n. Pharm. a benzodiazepine, C21H23ClFN3O, used in its hydrochloride form as a sedative and hypnotic in the management of insomnia and to alleviate anxiety ...
/flerr"eed, flur"-/, adj. marked by confusion or agitation. [FLURRY + -ED2] * * *
—flurriedly, adv. /flerr"ee, flur"ee/, n., pl. flurries, v., flurried, flurrying. n. 1. a light, brief shower of snow. 2. sudden commotion, excitement, or confusion; nervous ...
flush1 —flushable, adj. —flusher, n. —flushingly, adv. —flushness, n. /flush/, n. 1. a blush; rosy glow: a flush of embarrassment on his face. 2. a rushing or ...
flush girt
Carpentry. a girt running parallel to joists and at the same level. Cf. drop girt. * * *
flush left.
See under flush2 (def. 8). * * *
flush right.
See under flush2 (def. 8). * * *
/flush"dekt"/, adj. Naut. having a weather deck flush with the hull. [1620-30] * * *
flushable [flush′ə bəl] adj. able to be flushed down a toilet without causing an obstruction * * *
See flush1. * * *
/flush"ing/, n. Dutch, Vlissingen. a seaport on Walcheren Island, in the SW Netherlands. 46,055. * * * Northern section, Queens, New York, New York, U.S. Located at the head of ...
flush·less toilet (flŭshʹlĭs) n. A toilet that disposes of waste without using water, especially one using bacteria to break down waste matter. * * *
See flusher. * * *
flush·om·e·ter (flŭsh-ŏmʹĭ-tər) n. A device for flushing toilets and urinals that utilizes pressure from the water supply system rather than the force of gravity to ...
/flus"teuhr/, v.t. 1. to put into a state of agitated confusion: His constant criticism flustered me. 2. to excite and confuse with drink. v.i. 3. to become agitatedly ...
/flus"tray tid/ adj. flustered; agitated. Also, flusterated. [flustrate (b. FLUSTER and FRUSTRATE) + -ED2] * * *
—flutelike, adj. /flooht/, n., v., fluted, fluting. n. 1. a musical wind instrument consisting of a tube with a series of fingerholes or keys, in which the wind is directed ...
/flooh"tid/, adj. 1. fine, clear, and mellow; flutelike: fluted notes. 2. having flutes, grooves, or the like: a fluted column; fluted material; fluted stone tools. [1605-15; ...
      either of two families of elongated, long-snouted, marine fishes: Fistulariidae, the cornetfish (q.v.), and Aulostomidae, the trumpet fish (q.v.). * * *
/flooh"teuhr/, n. 1. a person who makes flutings. 2. Archaic. a flutist. [1350-1400; ME flouter, floutour < OF fleuteur, flauteor, equiv. to flaut(er) to play the flute + -eur, ...
/flooh"tee/, adj., flutier, flutiest. fluty. * * *
Flutie, Doug
▪ 2000       He had to wait 14 years, but in 1998, at age 36, quarterback Doug Flutie took the National Football League (NFL) by storm. He led the Buffalo Bills to a ...
/flooh"ting/, n. 1. something having ornamental grooves, as a Greek column. 2. a groove, furrow, or flute, or a series of these. [1475-85; FLUTE + -ING1] * * *
fluting and reeding
▪ architecture also called  gadrooning        in architectural decoration, surfaces worked into a regular series of (vertical) concave grooves or convex ridges, ...
/flooh"tist/, n. a flute player. Also, flautist. [1595-1605; FLUTE + -IST; see FLAUTIST] * * *
—flutterer, n. —flutteringly, adv. /flut"euhr/, v.i. 1. to wave, flap, or toss about: Banners fluttered in the breeze. 2. to flap the wings rapidly; fly with flapping ...
flutter and wow
▪ sound distortion       in sound reproduction, waver in a reproduced tone or group of tones that is caused by irregularities in turntable or tape drive speed during ...
flutter kick
a swimming kick in which the legs make rapid alternate up-and-down movements while the knees remain rigid, as in the crawl. [1930-35] * * *
flutter mill
Chiefly South Midland and Southern U.S. a flutter wheel, esp. a small one designed as a child's plaything. [1865-70, Amer.] * * *
flutter wheel
a waterwheel at the bottom of a chute, turned by the falling water. [1810-20] * * *
/flut"euhr bawrd', -bohrd'/, n. a kickboard. [1945-50; FLUTTER + BOARD] * * *
See flutter. * * *
flutter kick n. A swimming kick used in crawl and backstroke in which the legs are extended straight back and alternately moved up and down with a slight bend in the knee on the ...
/flut"euh ree/, adj. fluttering; apt to flutter. [1350-1400; ME; see FLUTTER, -Y1] * * *
/flooh"tee/, adj., flutier, flutiest. having the tone and rather high pitch variation of a flute: a person of fastidious manner and fluty voice. Also, flutey. [1815-25; FLUTE + ...
flu·va·stat·in (flo͞o'və-stătʹn) n. A statin, C24H25FNO4·NA, that blocks the body's synthesis of cholesterol and is administered especially to individuals who are at ...
/flooh"vee euhl/, adj. 1. of or pertaining to a river: a meandering fluvial contour. 2. produced by or found in a river: fluvial plants. [1350-1400; ME < L fluvialis, equiv. to ...
fluvial process
▪ geology       the physical interaction of flowing water and the natural channels of rivers (river) and streams. Such processes play an essential and conspicuous role ...
/flooh"vee euh til, -tuyl'/, adj. pertaining or peculiar to rivers; found in or near rivers. [1590-1600; < L fluviatilis, equiv. to fluvi- (see FLUVIAL) + -atil(is) assoc. ...
fluvio- [flo͞o′vē ō, flo͞o′vēə] 〚< L fluvius: see FLUVIAL〛 combining form 1. by the combined action of a river and [fluvioglacial] 2. of a river, stream, etc. ...
/flooh'vee oh meuh reen"/, adj. of or formed by the combined action of river and sea. [1840-50; < L fluvi- river (see FLUVIAL) + -o- + MARINE] * * *
▪ FAO soil group  one of the 30 soil groups in the classification system of the Food and Agriculture Organization (FAO) (soil). Fluvisols are found typically on level ...
/fluks/, n. 1. a flowing or flow. 2. the flowing in of the tide. 3. continuous change, passage, or movement: His political views are in a state of flux. 4. Physics. a. the rate ...
flux density
Physics. the magnetic, radiant, or electric flux per unit of cross-sectional area. [1895-1900] * * *
flux gate
Physics. an instrument for indicating the field strength of an external magnetic field, as that of the earth: used in some gyrocompasses and magnetometers. Also called flux ...
flux linkage
Elect. the product of the magnetic flux and the number of turns in a given coil. * * *
flux density n. Physics Flux per unit area. Also called flux. * * *
flux gate n. Physics A detector used to indicate the direction of the earth's magnetic field. * * *
—fluxional, fluxionary, adj. —fluxionally, adv. /fluk"sheuhn/, n. 1. an act of flowing; a flow or flux. 2. Math. the derivative relative to the time. [1535-45; < MF < LL ...
See fluxion. * * *
See fluxional. * * *
See fluxional. * * *
/fluks"mee'teuhr/, n. Physics. an instrument for measuring magnetic flux, consisting essentially of a ballistic galvanometer. [1900-05; FLUX + -METER] * * *
International avant-garde group of artists founded in Germany by U.S. artist George Maciunas (1931–78) in 1962. Its members, including Joseph Beuys, John Cage, and Yves Klein, ...
fly1 —flyable, adj. —flyability, n. /fluy/, v., flew or, for 11, 19, flied, flown, flying, n., pl. flies. v.i. 1. to move through the air using wings. 2. to be carried ...
fly agaric
a very poisonous common woodland mushroom, Amanita muscaria, having a glossy red or orange cap with white spots, formerly a fly poison. [1780-90] * * *
fly ash
1. fine particles of ash of a solid fuel carried out of the flue of a furnace with the waste gases produced during combustion. 2. such ash recovered from the waste gases, used ...
fly ball
Baseball. a ball that is batted up into the air. Also called fly. Cf. ground ball. [1860-65, Amer.] * * *
fly block
Mach., Naut. 1. (in a Spanish burton or the like) a block, supported by a runner, through which the hauling part of the fall is rove. 2. any block that shifts with the movement ...
fly book
Angling. a booklike case for artificial flies. [1840-50] * * *
fly casting
Angling. the act or technique of casting with an artificial fly as the lure, the rod used being longer and more flexible than that used in bait casting. [1885-90] * * *
fly fisherman
fly fisherman n. one who fishes by fly-casting * * *
fly front
a flap of material down one side of the front opening of a garment to conceal buttons, fasteners, or the like, as on a coat or dress. [1890-95] * * *
fly gallery
Theat. a narrow platform at the side of a stage from which ropes are manipulated to raise or lower scenery, battens, etc. Also called fly floor. [1885-90] * * *
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. [1810-20] * * *
fly line
Angling. a line for use in fly-fishing. * * *
fly loft
Theat. fly1 (def. 37). * * *
fly net
a net or fringe to protect a horse from flies or other insects. * * *
fly rail
1. Furniture. a horizontally swinging bracket for supporting a drop leaf. 2. Also called fly-rail, working rail. Theat. the upper row of pins or cleats on a pin rail, used for ...
Fly River
/fluy/ a river in New Guinea, flowing SE from the central part to the Gulf of Papua, ab. 800 mi. (1290 km) long. * * * River, New Guinea Island. One of the island's largest ...
fly rod
Angling. a light, extremely flexible fishing rod specially designed for use in fly-fishing. [1675-85] * * *
fly sheet
a sheet on which instructions or information are printed; handbill. [1825-35] * * *
fly swatter
a device for killing flies, mosquitoes, and other insects, usually a square sheet of wire mesh attached to a long handle. Also, fly-swatter, flyswatter. [1885-90] * * *
/fluy"buy nuyt'/, adj. 1. not reliable or responsible, esp. in business; untrustworthy: a fly-by-night operation. 2. not lasting; brief; impermanent; transitory: a fly-by-night ...
/fluy"buy wuyeur"/, adj. (of aircraft or spacecraft) activated entirely by electronic controls. * * *

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