12-letter words containing f, i, r
- fence lizard — either of two spiny lizards, Sceloporus undulatus and S. occidentalis, of the U.S. and northern Mexico, often seen on fences.
- fence-sitter — a person who remains neutral or undecided in a controversy.
- fencing wire — a heavy-gauge galvanized wire used for farm fences
- fenestration — the design and disposition of windows and other exterior openings of a building.
- fenfluramine — a sympathomimetic substance, C 12 H 16 F 3 N, formerly used mainly as an anorectic in the treatment of obesity but withdrawn from the market in 1997 because of its potential to cause valvular heart disease.
- 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).
- 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
- 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.
- fetoproteins — Plural form of fetoprotein.
- feverishness — The quality of being feverish.
- fianarantsoa — a city in E central Madagascar.
- 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.
- fiddler crab — any small, burrowing crab of the genus Uca, characterized by one greatly enlarged claw in the male.
- 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 circus — A derogatory pun on "field service". The field service organisation of any hardware manufacturer, but especially DEC. There is an entire genre of jokes about DEC field circus engineers: Q: How can you recognise a DEC field circus engineer with a flat tire? A: He's changing one tire at a time to see which one is flat. Q: How can you recognise a DEC field circus engineer who is out of gas? A: He's changing one tire at a time to see which one is flat. See Easter egging for additional insight on these jokes. There is also the "Field Circus Cheer" (from the plan file for DEC on MIT-AI): Maynard! Maynard! Don't mess with us! We're mean and we're tough! If you get us confused We'll screw up your stuff. (DEC's service HQ is located in Maynard, Massachusetts).