12-letter words starting with f
- fennoscandia — region in N Europe, including Scandinavia, Finland, and the part of NW Russia west of the White Sea
- fer de lance — a large pit viper, Bothrops atrox, of tropical America.
- fer-de-lance — a large pit viper, Bothrops atrox, of tropical America.
- ferdinand ii — ("the Catholic") 1452–1516, founder of the Spanish monarchy 1506: king of Sicily 1468–1516, king of Aragon 1479–1516; as Ferdinand III, king of Naples 1504–16; as King Ferdinand V, joint sovereign (with Isabella I) of Castile 1474–1504.
- ferdinand vi — 1713–59, king of Spain 1746–59 (son of Philip V).
- fergus falls — a city in W central Minnesota.
- 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.
- fermi energy — the level in the distribution of electron energies in a solid at which a quantum state is equally likely to be occupied or empty
- fernando póo — Bioko
- ferrel's law — the law that wind is deflected to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, derived from the application of the Coriolis effect to air masses.
- ferric oxide — a dark-red, crystalline, water-insoluble solid, Fe 2 O 3 , occurring naturally, as hematite and rust, or synthesized: used chiefly as a pigment, as a mordant, as a coating for magnetic recording tape, and in the manufacture of polishing compounds.
- ferricyanide — a salt of ferricyanic acid, as potassium ferricyanide, K 3 Fe(CN) 6 .
- ferris wheel — an amusement ride consisting of a large upright wheel rotating on a fixed stand and having seats around its rim suspended freely so that they remain right side up as they revolve.
- ferrite core — a ferrite magnetic core used in a core memory.
- ferrocyanide — a salt of ferrocyanic acid, as potassium ferrocyanide, K 4 Fe(CN) 6 .
- ferrofluidic — Of or pertaining to a ferrofluid.
- ferrokinesis — (parapsychology) The ability to mentally manipulate iron and other metals.
- ferroniobium — An important alloy of iron and niobium.
- ferrosilicon — a ferroalloy containing up to 95 percent silicon.
- ferry bridge — transporter bridge.
- fertilizable — Capable of being fertilized.
- ferulic acid — a compound, C 10 H 10 O 4 , found in small amounts in lants, that occurs in two isomers, one a yellow oily liquid and the other crystalline.
- festivalgoer — A person attending a festival.
- festschrifts — Plural form of festschrift.
- fete galante — fête champêtre.
- fetoproteins — Plural form of fetoprotein.
- feuchtwanger — Lion [lee-awn] /ˈli ɔn/ (Show IPA), 1884–1958, German novelist and dramatist.
- feverishness — The quality of being feverish.
- fianarantsoa — a city in E central Madagascar.
- fianchettoed — Simple past tense and past participle of fianchetto.
- fiber bundle — a flexible bundle of optical glass that transmits images.
- 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.
- fibrilliform — of the form of a fibril.
- fibrinogenic — producing fibrin.
- fibrinolysin — a proteolytic enzyme, formed in the blood from plasminogen, that causes the breakdown of the fibrin in blood clots.
- fibrinolysis — the disintegration or dissolution of fibrin, especially by enzymatic action.
- fibrinolytic — the disintegration or dissolution of fibrin, especially by enzymatic action.
- fibroadenoma — a benign tumor originating from glandular tissue, as in the female breast.
- fibroblastic — a cell that contributes to the formation of connective tissue fibers.
- fibromatosis — (pathology) The presence of multiple fibromas.
- fibromyalgia — a syndrome characterized by fatigue and chronic pain in the muscles and in tissues surrounding the joints.
- fibrosarcoma — a sarcoma derived from fibroblast cells, often able to generate collagen.
- fibrous root — a root, as in most grasses, having numerous, very fine branches of approximately the same length.