15-letter words containing n, i, f, t

fire resistance — the amount of resistance of a material or construction to fire.
fire water pond — A fire water pond is an area of water which is kept so it can be used if there is a fire.
fire-and-forget — used to describe a type of missile that, once fired, is able to guide itself to its target
first amendment — an amendment to the U.S. Constitution, ratified in 1791 as part of the Bill of Rights, prohibiting Congress from interfering with freedom of religion, speech, assembly, or petition.
first gentleman — (often initial capital letters) the husband of the U.S. president or a current governor or mayor.
first intention — See under intention (def 5a).
first messenger — a hormone that triggers a biochemical reaction at a site removed from its release.
first principle — any axiom, law, or abstraction assumed and regarded as representing the highest possible degree of generalization.
first responder — a person who is certified to provide medical care in emergencies before more highly trained medical personnel arrive on the scene: a firefighter trained as a first responder.
first-intention — an act or instance of determining mentally upon some action or result.
fish restaurant — a restaurant which serves mainly fish
fission product — a nuclide produced either directly by nuclear fission or by the radioactive decay of such a nuclide
fission reactor — a nuclear reactor in which a fission reaction takes place
fitness fanatic — someone who is obsessed with exercise and keeping himself or herself fit
fitness tracker — a wearable electronic device or a software application that monitors one's physical fitness and daily physical activity.
fitness trainer — someone whose job is to improve other people's fitness
flag lieutenant — an admiral's ADC
flapping router — (networking) A router that transmits routing updates alternately advertising a destination network first via one route, then via a different route. Flapping routers are identified on more advanced protocol analysers such as the Network General (TM) Sniffer.
fleet insurance — Fleet insurance is a type of insurance contract that applies to a number of vehicles.
flemish brabant — a province of central Belgium, formed in 1995 from the N part of Brabant province: densely populated and intensively farmed, with large industrial centres. Pop: 1 031 904 (2004 est). Area: 2106 sq km (813 sq miles)
flight engineer — a member of an aircraft crew responsible for the mechanical systems, fueling, and servicing of the craft.
flight of fancy — An idea or statement that is very imaginative but complicated, silly, or impractical can be referred to as a flight of fancy.
flight sergeant — a noncommissioned officer in the Royal Air Force junior in rank to a master aircrew
flight shooting — competitive shooting for distance only.
flirtatiousness — The quality of being flirtatious.
floating charge — an unsecured charge on the assets of an enterprise that allows such assets to be used commercially until the enterprise ceases to operate or the creditor intervenes to demand collateral
floating island — a dessert consisting of boiled custard with portions of meringue, whipped cream, or whipped egg whites and sometimes jelly floating upon it or around it.
floating policy — (in marine insurance) a policy that provides protection of a broad nature for shipments of merchandise and that is valid continuously until canceled.
floating screed — Building Trades. screed (def 3).
floating supply — the aggregate supply of ready-to-market goods or securities.
florida current — the part of the Gulf Stream which extends from the Florida Strait to Cape Hatteras.
flowering plant — a plant that produces flowers, fruit, and seeds; angiosperm.
fluoridationist — One who supports the addition of fluoride to the public water supply.
fluorine dating — a method of determining the relative age of fossil bones found in the same excavation by comparing their fluorine content.
flying buttress — a segmental arch transmitting an outward and downward thrust to a solid buttress that through its inertia transforms the thrust into a vertical one.
flying dutchman — a legendary Dutch ghost ship supposed to be seen at sea, especially near the Cape of Good Hope.
flying fortress — a heavy bomber, the B-17, with four radial piston engines, widely used over Europe and the Mediterranean by the U.S. Air Force in World War II.
fob destination — FOB destination is a shipping term indicating that ownership of goods passes at delivery to their destination, and the seller has total responsibility until then.
focal infection — an infection in which bacteria are localized in some region, as the tonsils or the tissue around a tooth, from which they may spread to some other organ or structure of the body.
food insecurity — an economic and social condition of limited or uncertain access to adequate food.
for a certainty — without doubt
for their pains — You say that something was all you got for your pains when you are mentioning the disappointing result of situation into which you put a lot of work or effort.
forbidden fruit — the fruit of the tree of knowledge of good and evil, tasted by Adam and Eve against God's prohibition. Gen. 2:17; 3:3.
forensic expert — an expert in applying scientific, technical or medical knowledge to the purposes of law
foreshortenings — Plural form of foreshortening.
foresightedness — care or provision for the future; provident care; prudence.
formation dance — any dance in which a number of couples form a certain arrangement, such as two facing lines or a circle, and perform a series of figures within or based on that arrangement
formation fluid — Formation fluid is fluid in the pores (=tiny holes) of a rock.
formation rules — the set of rules that specify the syntax of a formal system; the algorithm that generates the well-formed formulae
formularization — The act of formularizing; a formularized or formulated statement or exhibition.

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