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Glossary · Nouns · F

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TermTypeDefinitionClassificationsUpdated
Fetishnouna form of sexual desire in which gratification depends to an abnormal degree on some object or item of clothing or part of the bodyverifiedMay 18, 2026
Fetishismnounsexual arousal or gratification resulting from handling a fetish (or a specific part of the body other than the sexual organs)verifiedMay 18, 2026
Fetishistnounone who engages in fetishism (especially of a sexual nature)verifiedMay 18, 2026
Fetlocknounthe joint between the cannon bone and the pasternverifiedMay 18, 2026
Fetlock JointnounMWEthe joint between the cannon bone and the pasternverifiedMay 18, 2026
Fetologynounthe branch of medicine concerned with the fetus in the uterusverifiedMay 18, 2026
Fetometrynounmeasurement of a fetus, especially the diameter of the headverifiedMay 18, 2026
Fetoproteinnounany of several antigens that occur naturally in the fetus and sometimes in adults with cancerverifiedMay 18, 2026
Fetornouna distinctive odor that is offensively unpleasantverifiedMay 18, 2026
Fetoscopenouna stethoscope placed on the pregnant woman's abdomen to listen for the fetal heartbeatverifiedMay 18, 2026
Fetoscopynounprenatal diagnosis that allows direct observation of a fetus in the uterus and the withdrawal of fetal bloodverifiedMay 18, 2026
Fetter BonenounMWEthe part between the fetlock and the hoofverifiedMay 18, 2026
Fetterbushnounshowy evergreen shrub of southeastern United States with shiny leaves and angled branches and clusters of pink to reddish flowers that resemble an umbelverifiedMay 18, 2026
Fettuccinenounpasta in flat strips wider than linguineverifiedMay 18, 2026
Fettuccine AlfredonounMWEfettuccine in cream sauce with cheeseverifiedMay 18, 2026
Fettuccininounpasta in flat strips wider than linguineverifiedMay 18, 2026
Fetusnounan unborn or unhatched vertebrate in the later stages of development showing the main recognizable features of the mature animalverifiedMay 18, 2026
Feudal LordnounMWEa man of rank in the ancient regimeverifiedMay 18, 2026
Feudal LordshipnounMWEthe position and authority of a feudal lordverifiedMay 18, 2026
Feudal SystemnounMWEthe social system that developed in Europe in the 8th centuryverifiedMay 18, 2026
Feudalismnounthe social system that developed in Europe in the 8th centuryverifiedMay 18, 2026
Fevernouna rise in the temperature of the bodyverifiedMay 18, 2026
Fever BlisternounMWEcaused by herpes simplex virus type 1 (HSV-1)verifiedMay 18, 2026
Fever PitchnounMWEa state of extreme excitementverifiedMay 18, 2026
Fever TreenounMWEornamental shrub or small tree of swampy areas in southwestern United States having large pink or white sepals and yielding Georgia bark for treating feververifiedMay 18, 2026
Feverfewnounbushy aromatic European perennial herb having clusters of buttonlike white-rayed flower headsverifiedMay 18, 2026
Feverishnessnouna rise in the temperature of the bodyverifiedMay 18, 2026
Feverrootnouncoarse weedy American perennial herb with large usually perfoliate leaves and purple or dull red flowersverifiedMay 18, 2026
Few-Flowered LeeknounMWEleek producing bulbils instead of flowersverifiedMay 18, 2026
Fewnessnounthe quality of being small in numberverifiedMay 18, 2026
Feznouna felt cap (usually red) for a manverifiedMay 18, 2026
Fiancenouna man who is engaged to be marriedverifiedMay 18, 2026
Fianceenouna woman who is engaged to be marriedverifiedMay 18, 2026
Fiasconouna sudden and violent collapseverifiedMay 18, 2026
Fiatnouna legally binding command or decision entered on the court record (as if issued by a court or judge)verifiedMay 18, 2026
Fiat MoneynounMWEmoney that the government declares to be legal tender although it cannot be converted into standard specieverifiedMay 18, 2026
Fibbernounsomeone who tells liesverifiedMay 18, 2026
Fibbingnouna trivial act of lying or being deliberately unclearverifiedMay 18, 2026
Fibernounthe inherent complex of attributes that determines a persons moral and ethical actions and reactionsverifiedMay 18, 2026
Fiber BundlenounMWEa bundle of fibers (especially nerve fibers)verifiedMay 18, 2026
Fiber Optic CablenounMWEa cable made of optical fibers that can transmit large amounts of information at the speed of lightverifiedMay 18, 2026
Fiber OpticsnounMWEthe transmission of light signals via glass fibersverifiedMay 18, 2026
Fiber-Optic Transmission SystemnounMWEa communication system using fiber optic cablesverifiedMay 18, 2026
Fiberboardnounwallboard composed of wood chips or shavings bonded together with resin and compressed into rigid sheetsverifiedMay 18, 2026
Fiberglassnouna covering material made of glass fibers in resinsverifiedMay 18, 2026
Fiberscopenouna flexible medical instrument involving fiber optics that is used to examine internal organsverifiedMay 18, 2026
Fibrenounthe inherent complex of attributes that determines a persons moral and ethical actions and reactionsverifiedMay 18, 2026
Fibre BundlenounMWEa bundle of fibers (especially nerve fibers)verifiedMay 18, 2026
Fibre channelnounMWEA high performance serial link supporting its own, as well as higher-level protocols such as the small computer system interface, high performance parallel interface framing protocol and intelligent peripheral interface. The Fibre Channel standard addresses the need for very fast transfers of large amounts of information. The fast (up to 1 Giga byte per second) technology can be converted for LAN technology by adding a switch specified in the Fibre Channel standard that handles multipoint addressing. Fibre Channel gives users one port that supports both channel and network interfaces, unburdening the computers from large number of input and output (I/O) ports. Fibre Channel provides control and complete error checking over the link.NetworkMay 9, 2026
Fibre Optic CablenounMWEa cable made of optical fibers that can transmit large amounts of information at the speed of lightverifiedMay 18, 2026
Fibre OpticsnounMWEthe transmission of light signals via glass fibersverifiedMay 18, 2026
Fibre-Optic Transmission SystemnounMWEa communication system using fiber optic cablesverifiedMay 18, 2026
Fibreboardnounwallboard composed of wood chips or shavings bonded together with resin and compressed into rigid sheetsverifiedMay 18, 2026
Fibreglassnouna covering material made of glass fibers in resinsverifiedMay 18, 2026
Fibrilnouna very slender natural or synthetic fiberverifiedMay 18, 2026
Fibrillationnounmuscular twitching involving individual muscle fibers acting without coordinationverifiedMay 18, 2026
Fibrinnouna white insoluble fibrous protein formed by the action of thrombin on fibrinogen when blood clotsverifiedMay 18, 2026
Fibrinasenounin the clotting of blood thrombin catalyzes factor XIII into its active form (fibrinase) which causes fibrin to form a stable clotverifiedMay 18, 2026
Fibrinogennouna protein present in blood plasmaverifiedMay 18, 2026
Fibrinolysinnounan enzyme that dissolves the fibrin of blood clotsverifiedMay 18, 2026
Fibrinolysisnouna normal ongoing process that dissolves fibrin and results in the removal of small blood clotsverifiedMay 18, 2026
Fibrinopeptidenounpeptide released from the amino end of fibrinogen by the action of thrombin to form fibrin during clotting of the bloodverifiedMay 18, 2026
Fibroadenomanounbenign and movable and firm and not tender tumor of the breastverifiedMay 18, 2026
Fibroblastnouna cell from which connective tissue developsverifiedMay 18, 2026
Fibrocartilagenouncartilage that is largely composed of fibers like those in ordinary connective tissueverifiedMay 18, 2026
Fibrocystic Breast DiseasenounMWEthe presence of one or more cysts in a breastverifiedMay 18, 2026
Fibrocystic Disease of the BreastnounMWEthe presence of one or more cysts in a breastverifiedMay 18, 2026
Fibrocystic Disease of the PancreasnounMWEthe most common congenital diseaseverifiedMay 18, 2026
Fibroidnounbenign tumor containing fibrous tissue (especially in the uterus)verifiedMay 18, 2026
Fibroid TumornounMWEbenign tumor containing fibrous tissue (especially in the uterus)verifiedMay 18, 2026
Fibromanounnonmalignant tumor of connective tissueverifiedMay 18, 2026
Fibromyositisnounlocal inflammation of muscle and connective tissueverifiedMay 18, 2026
Fibrosisnoundevelopment of excess fibrous connective tissue in an organverifiedMay 18, 2026
Fibrositisnouninflammation of white fibrous tissues (especially muscle sheaths)verifiedMay 18, 2026
Fibrositynounthe quality of being fibrousverifiedMay 18, 2026
Fibrous AstrocytenounMWEstar-shaped cells with long processesverifiedMay 18, 2026
Fibrous Dysplasia of BonenounMWEa disturbance in which bone that is undergoing lysis is replaced by an abnormal proliferation of fibrous tissue resulting in bone lesions or skin lesionsverifiedMay 18, 2026
Fibrous JointnounMWEan immovable joint (especially between the bones of the skull)verifiedMay 18, 2026
Fibrous TissuenounMWEtissue consisting of or containing fibers in both animals and plantsverifiedMay 18, 2026
Fibrous-Rooted BegonianounMWEany of numerous begonias having fibrous rather than tuberous or rhizomatous rootsverifiedMay 18, 2026
Fibrousnessnounthe quality of being fibrousverifiedMay 18, 2026
Fibrovascular BundlenounMWEa unit strand of the vascular system in stems and leaves of higher plants consisting essentially of xylem and phloemverifiedMay 18, 2026
Fibulanounthe outer and thinner of the two bones of the human leg between the knee and ankleverifiedMay 18, 2026
Fibular VeinnounMWEaccompany the peroneal arteriesverifiedMay 18, 2026
Ficenouna nervous belligerent little mongrel dogverifiedMay 18, 2026
Fichunouna lightweight triangular scarf worn by a womanverifiedMay 18, 2026
Ficklenessnoununfaithfulness by virtue of being unreliable or treacherousverifiedMay 18, 2026
Fictionnouna literary work based on the imagination and not necessarily on factverifiedMay 18, 2026
Fictional AnimalnounMWEanimals that exist only in fiction (usually in children's stories)verifiedMay 18, 2026
Fictional CharacternounMWEan imaginary person represented in a work of fiction (play or film or story)verifiedMay 18, 2026
Fictionalisationnouna literary work based partly or wholly on fact but written as if it were fictionverifiedMay 18, 2026
Fictionalizationnouna literary work based partly or wholly on fact but written as if it were fictionverifiedMay 18, 2026
Fictitious CharacternounMWEan imaginary person represented in a work of fiction (play or film or story)verifiedMay 18, 2026
Fictitious NamenounMWE(law) a name under which a corporation conducts business that is not the legal name of the corporation as shown in its articles of incorporationverifiedMay 18, 2026
Fictitious PlacenounMWEa place that exists only in imaginationverifiedMay 18, 2026
Fiddle-Faddlenountrivial nonsenseverifiedMay 18, 2026
FiddleheadnounNew World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green frondsverifiedMay 18, 2026
Fiddlehead FernnounMWENew World fern having woolly cinnamon-colored spore-bearing fronds in early spring later surrounded by green frondsverifiedMay 18, 2026
Fiddlenecknounhairy annual of California to Mexico with crowded cymes of small blue to lilac or mauve flowersverifiedMay 18, 2026
Fiddlernounsomeone who manipulates in a nervous or unconscious mannerverifiedMay 18, 2026