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Glossary · Nouns · F

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TermTypeDefinitionClassificationsUpdated
Fusiliernoun(formerly) a British infantryman armed with a light flintlock musketverifiedMay 18, 2026
Fusionnouna nuclear reaction in which nuclei combine to form more massive nuclei with the simultaneous release of energyverifiedMay 18, 2026
Fusion BombnounMWEa nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form heliumverifiedMay 18, 2026
Fusion CookingnounMWEcooking that combines ingredients and techniques and seasonings from different cuisinesverifiedMay 18, 2026
Fusion ReactornounMWEa nuclear reactor that uses controlled nuclear fusion to generate energyverifiedMay 18, 2026
Fuss-Budgetnounthinks about unfortunate things that might happenverifiedMay 18, 2026
Fussinessnoununnecessary elaborateness in detailsverifiedMay 18, 2026
Fusspotnounthinks about unfortunate things that might happenverifiedMay 18, 2026
Fustiannouna strong cotton and linen fabric with a slight napverifiedMay 18, 2026
Futilitynounuselessness as a consequence of having no practical resultverifiedMay 18, 2026
Futonnounmattress consisting of a pad of cotton batting that is used for sleeping on the floor or on a raised frameverifiedMay 18, 2026
Futtock ShroudnounMWEshroud that is part of a ship's riggingverifiedMay 18, 2026
Future DatenounMWEa particular day in the future that is specified as the time something will happenverifiedMay 18, 2026
Future PerfectnounMWEa perfective tense used to describe action that will be completed in the futureverifiedMay 18, 2026
Future Perfect TensenounMWEa perfective tense used to describe action that will be completed in the futureverifiedMay 18, 2026
Future ProgressivenounMWEa progressive tense used to express action that will be on-going in the futureverifiedMay 18, 2026
Future Progressive TensenounMWEa progressive tense used to express action that will be on-going in the futureverifiedMay 18, 2026
Future TensenounMWEa verb tense that expresses actions or states in the futureverifiedMay 18, 2026
Futures ContractnounMWEan agreement to buy or sell a specific amount of a commodity or financial instrument at a particular price on a stipulated future dateverifiedMay 18, 2026
Futures ExchangenounMWEa commodity exchange where futures contracts are tradedverifiedMay 18, 2026
Futures MarketnounMWEa commodity exchange where futures contracts are tradedverifiedMay 18, 2026
Futurismnounan artistic movement in Italy around 1910 that tried to express the energy and values of the machine ageverifiedMay 18, 2026
Futuristicsnounthe study or prediction of future developments on the basis of existing conditionsverifiedMay 18, 2026
Futuritynounthe quality of being in or of the futureverifiedMay 18, 2026
Futurologynounthe study or prediction of future developments on the basis of existing conditionsverifiedMay 18, 2026
Fuzenounany igniter that is used to initiate the burning of a propellantverifiedMay 18, 2026
Fuzeenouna friction match with a large head that will stay alight in the windverifiedMay 18, 2026
Fuzznounfilamentous hairlike growth on a plantverifiedMay 18, 2026
Fuzzinessnounthe quality of being indistinct and without sharp outlinesverifiedMay 18, 2026
FuzzingnounThe use of special regression testing tools to generate out-of-spec input for an application in order to find security vulnerabilities. Also see "regression testing".ProcessMay 9, 2026
Fuzzy LogicnounMWEa form of mathematical logic in which truth can assume a continuum of values between 0 and 1verifiedMay 18, 2026