17-letter words containing r, f
- fingertip control — control exercised through your fingertips, e.g. by touching a touchscreen
- finite difference — difference (def 9c).
- fire commissioner — the senior or officer at state or provincial level in charge of fire prevention and fire safety
- fire extinguisher — a portable container, usually filled with special chemicals for putting out a fire.
- fire-extinguisher — a portable container, usually filled with special chemicals for putting out a fire.
- firehose syndrome — (networking, jargon) An absence, failure or inadequacy of flow control mechanisms causing the sender to overwhelm the receiver. The implication is that, like trying to drink from a firehose, the consequenses are worse than just loss of data, e.g. the receiver may crash. See ping-flood.
- first call on sth — If you have first call on something, you will be asked before anyone else whether you want to buy or use it.
- first commandment — “Thou shalt have no other gods before me”: first of the Ten Commandments.
- first normal form — database normalisation
- first performance — the first time that a play or concert is performed
- first triumvirate — the political alliance of Caesar, Crassus, and Pompey, formed in 60 bc
- first-aid classes — classes which teach people how to give immediate medical help in an emergency
- first-degree burn — a burned place or area: a burn where fire had ripped through the forest.
- first-loss policy — an insurance policy for goods in which a total loss is extremely unlikely and the insurer agrees to provide cover for a sum less than the total value of the property
- first-order logic — (language, logic) The language describing the truth of mathematical formulas. Formulas describe properties of terms and have a truth value. The following are atomic formulas: True False p(t1,..tn) where t1,..,tn are terms and p is a predicate. If F1, F2 and F3 are formulas and v is a variable then the following are compound formulas: The "order" of a logic specifies what entities "For all" and "Exists" may quantify over. First-order logic can only quantify over sets of atomic propositions. (E.g. For all p . p => p). Second-order logic can quantify over functions on propositions, and higher-order logic can quantify over any type of entity. The sets over which quantifiers operate are usually implicit but can be deduced from well-formedness constraints. In first-order logic quantifiers always range over ALL the elements of the domain of discourse. By contrast, second-order logic allows one to quantify over subsets.
- fish out of water — any of various cold-blooded, aquatic vertebrates, having gills, commonly fins, and typically an elongated body covered with scales.
- fitness programme — a plan to help someone improve their health and physical condition
- five-spice powder — a mixture of spices used especially in Chinese cooking, usually including cinnamon, cloves, fennel seed, pepper, and star anise.
- flagrante delicto — Law. in the very act of committing the offense.
- flash photography — photography using a momentary flash of artificial light as a source of illumination.
- flea in one's ear — a sharp rebuke
- flexible response — a military strategy that enables the response to an attack to be adapted to the nature and strength of the attack
- flickertail state — North Dakota (used as a nickname).
- flight instrument — any instrument used to indicate the altitude, attitude, airspeed, drift, or direction of an aircraft.
- floating currency — a currency that is free to fluctuate against other currencies in accordance with market forces
- floating dry dock — a dock that floats and can be lowered in the water for the entrance of a ship, and then raised for use as a dry dock
- flog a dead horse — a large, solid-hoofed, herbivorous quadruped, Equus caballus, domesticated since prehistoric times, bred in a number of varieties, and used for carrying or pulling loads, for riding, and for racing.
- floppy disk drive — disk drive
- florentine stitch — a straight stitch worked in a high and low relief pattern to form a variety of zigzag or oblique designs.
- flower-of-an-hour — a malvaceous Old World herbaceous plant, Hibiscus trionum, having pale yellow flowers with a bladder-like calyx
- flowering currant — an ornamental shrub, Ribes sanguineum, growing to 2 to 3 metres (6 to 9ft) in height, with red, crimson, yellow, or white flowers: family Saxifragaceae
- flowering dogwood — a North American dogwood tree, Cornus florida, having small greenish flowers in the spring, surrounded by white or pink bracts that resemble petals: the state flower and the state tree of Virginia.
- flowering tobacco — any plant belonging to the genus Nicotiana, of the nightshade family, as N. alata and N. sylvestris, having clusters of fragrant flowers that usually bloom at night, grown as an ornamental.
- flowers of sulfur — sublimed sulfur in the form of a fine yellow powder, used in medicine chiefly to kill parasites and fungi and to treat certain skin diseases.
- fluid lubrication — lubrication in which bearing surfaces are separated by an oil film sustained by the motion of the parts
- fluorescent light — a fluorescent lamp in domestic or commercial use; a fluorescent strip
- fluorescent strip — a fluorescent light in the form of a long strip
- fluvioterrestrial — (of animals) able to live in rivers and on land
- folie de grandeur — a delusion of grandeur; megalomania.
- follow the leader — a child's game in which players, one behind the other, follow a leader and must repeat or follow everything he or she does.
- footmen's gallery — the rearmost section of seats in the balcony of an English theater, especially in the late 17th and early 18th centuries.
- for all the world — the earth or globe, considered as a planet.
- for ever and ever — for eternity
- for heaven's sake — expressing frustration
- for love or money — If you cannot or will not do something for love or money, you are completely unable to do it or you do not intend to do it.
- for the most part — a portion or division of a whole that is separate or distinct; piece, fragment, fraction, or section; constituent: the rear part of the house; to glue the two parts together.
- forced convection — Forced convection is convection in which the movement of fluid does not happen naturally but is helped by a device such as a fan or pump.
- forcing frequency — the frequency of an oscillating force applied to a system
- fore-and-aft sail — any of various sails, as jib-headed sails, gaff sails, lugsails, lateen sails, spritsails, staysails, and jibs, that do not set on yards and whose normal position, when not trimmed, is in a fore-and-aft direction amidships.
- foreign relations — (used with a singular verb) the field of foreign affairs: an expert in foreign relations.