12-letter words containing r, t, f
- fast reactor — a nuclear reactor using little or no moderator, fission being caused by fast neutrons
- fast-forward — a function of an audio or video recorder or player, as a cassette deck or DVR, that allows the content to be advanced rapidly.
- fast-growing — growing very quickly
- fast-tracker — of or relating to the fast track.
- fata morgana — Meteorology. a mirage consisting of multiple images, as of cliffs and buildings, that are distorted and magnified to resemble elaborate castles, often seen near the Straits of Messina.
- father image — a person substituted in one's mind for one's father and often the object of emotions felt toward the father
- father's day — a day, usually the third Sunday in June, set aside in honor of fathers.
- fatherliness — The property of being fatherly.
- fault-finder — a person who habitually finds fault, complains, or objects, especially in a petty way.
- favorability — The quality or degree of being viewed favorably.
- favorite son — (at a national political convention) a candidate nominated for office by delegates from his or her own state.
- feather palm — any palm having large pinnate or bipinnate leaves, as the date palm or royal palm.
- feather shot — fine bean shot.
- feather star — a free-swimming crinoid.
- featherbacks — Plural form of featherback.
- featherbrain — a foolish or giddy person; scatterbrain.
- featherheads — Plural form of featherhead.
- featheriness — The state or quality of being feathery.
- featherlight — extremely light; light as a feather.
- feature film — full-length movie
- featurectomy — /fee"ch*r-ek"t*-mee/ The act of removing a feature from a program. Featurectomies come in two flavours, the "righteous" and the "reluctant". Righteous featurectomies are performed because the remover believes the program would be more elegant without the feature, or there is already an equivalent and better way to achieve the same end. (Doing so is not quite the same thing as removing a misfeature.) Reluctant featurectomies are performed to satisfy some external constraint such as code size or execution speed.
- febrifacient — producing fever.
- federalistic — an advocate of federalism.
- federatively — from a federative point of view
- fence-sitter — a person who remains neutral or undecided in a controversy.
- fenestration — the design and disposition of windows and other exterior openings of a building.
- ferlinghetti — Lawrence, born 1920? U.S. poet associated with the Beat Generation.
- fermat prime — (mathematics) A prime number of the form 2^2^n + 1. Any prime number of the form 2^n+1 must be a Fermat prime. Fermat conjectured in a letter to someone or other that all numbers 2^2^n+1 are prime, having noticed that this is true for n=0,1,2,3,4. No further Fermat primes are known; several have been factorised, and several more have been proved composite without finding explicit factorisations.
- fermentation — the act or process of fermenting.
- fermentative — tending to produce or undergo fermentation.
- ferrite core — a ferrite magnetic core used in a core memory.
- fertilizable — Capable of being fertilized.
- festivalgoer — A person attending a festival.
- festschrifts — Plural form of festschrift.
- fetoproteins — Plural form of fetoprotein.
- feuchtwanger — Lion [lee-awn] /ˈli ɔn/ (Show IPA), 1884–1958, German novelist and dramatist.
- fianarantsoa — a city in E central Madagascar.
- fiber optics — the branch of optics that deals with the transmission of light through transparent fibers, as in the form of pulses for the transmission of data or communications, or through fiber bundles for the transmission of images.
- fiberization — the process or practice of breaking into fibres
- fibre optics — optical fibre
- fibrillating — Present participle of fibrillate.
- fibrillation — the formation of fibrils.
- fibrinolytic — the disintegration or dissolution of fibrin, especially by enzymatic action.
- fibroblastic — a cell that contributes to the formation of connective tissue fibers.
- fibromatosis — (pathology) The presence of multiple fibromas.
- fibrous root — a root, as in most grasses, having numerous, very fine branches of approximately the same length.
- fidel castro — Cipriano [sip-ree-ah-noh;; Spanish see-pree-ah-naw] /ˌsɪp riˈɑ noʊ;; Spanish ˌsi priˈɑ nɔ/ (Show IPA), 1858?–1924, Venezuelan military and political leader: president 1901–08; exiled 1908.
- field centre — a research centre equipped for field studies, usually located in or near an area of scientific interest
- field cornet — a commander of burgher troops called up in time of war or in an emergency, esp during the 19th century
- field ration — ration issued and authorized for troops in the field.