15-letter words containing f, i, n
- field intensity — the vector sum of all forces exerted by a field on a unit mass, unit charge, unit magnetic pole, etc., at a given point within the field.
- field of honour — the place or scene of a battle or duel, esp of jousting tournaments in medieval times
- field of vision — the entire view encompassed by the eye when it is trained in any particular direction.
- field woundwort — the plant Stachys arvensis
- fifth amendment — an amendment to the U.S. Constitution, ratified in 1791 as part of the Bill of Rights, providing chiefly that no person be required to testify against himself or herself in a criminal case and that no person be subjected to a second trial for an offense for which he or she has been duly tried previously.
- fifth columnist — A fifth columnist is someone who secretly supports and helps the enemies of the country or organization they are in.
- fifth dimension — a theoretical dimension beyond or in addition to a fourth dimension.
- fight windmills — to fight imaginary evils or opponents
- fighter command — a former unit of the Royal Air Force dedicated to the use of fighter aircraft, esp against enemy bombers and their escorts during WWII
- fighting chance — a possibility of success following a struggle.
- fighting french — Free French.
- fighting spirit — courage and determination expressed in a willingness to fight or struggle
- figurate number — a number having the property that the same number of equally spaced dots can be arranged in the shape of a regular geometrical figure.
- file management — the work of organizing and arranging files in a computer
- filemaker, inc. — (company) The company that distributes the FileMaker database. FileMaker, Inc. was previously known as Claris and was renamed after a restructuring in January 1998.
- filling station — service station (def 1).
- fillister plane — an adjustable plane for cutting rabbets, grooves, etc
- finance company — an institution engaged in such specialized forms of financing as purchasing accounts receivable, extending credit to retailers and manufacturers, discounting installment contracts, and granting loans with goods as security.
- find one's feet — to become capable or confident, as in a new job
- finders keepers — whoever finds something has the right to keep it
- fine-tooth comb — a comb having narrow, closely set teeth.
- finger alphabet — a series of shapes made by the fingers that indicate letters of an alphabet and can be used in fingerspelling for the deaf
- finger painting — a jellylike paint, used chiefly by children in painting, usually with their fingers.
- finger spelling — a method of communicating with or among deaf people in which different shapes made with the fingers represent different letters of the alphabet
- finger-pointing — the imputation of blame or responsibility.
- finishing touch — a final additional or detail that completes and perfects something
- finite automata — Finite State Machine
- finno-russo war — the war (1939–40) between Finland and the Soviet Union.
- fire department — the department of a municipal government charged with the prevention and extinguishing of fire.
- fire prevention — safety measures to decrease fire risk
- 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
- fire-engine red — a very bright red color.
- 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 and brewis — a Newfoundland dish of cooked salt cod and soaked hard bread
- fish restaurant — a restaurant which serves mainly fish
- fishing harbour — a place where fishing boats are tied up
- fishing village — a village in which fishing is the main industry
- 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
- fissiparousness — The quality of being fissiparous.
- 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.