15-letter words containing s, o, r, i
- 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 world war — World War I.
- first-day cover — a cover marked so as to indicate that it was mailed on the first day of issue of the stamp it bears and from one of the cities at which the stamp was issued on that day.
- first-intention — an act or instance of determining mentally upon some action or result.
- fishing harbour — a place where fishing boats are tied up
- 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.
- five-star hotel — a top-quality hotel offering exceptional luxury
- flavourdynamics — as in quantum flavour dynamics, a mathematical model used to describe the interaction of flavoured particles (weak force) through the exchange of intermediate vector bosons
- flirtatiousness — The quality of being flirtatious.
- floating screed — Building Trades. screed (def 3).
- flood insurance — insurance covering loss or damage to property arising from a flood, flood tide, or the like.
- floor exercises — exercises designed to improve fitness, carried out on the floor
- floral tributes — bunches or arrangements of flowers left as a memorial at the site of a fatal incident
- floriferousness — Quality of being floriferous, or bearing many flowers.
- flow of spirits — natural happiness
- flowerhorn fish — a brightly coloured cichlid fish with a large protuberance on the head
- flowering shrub — any shrub that produces flowers
- flowers of zinc — a white or yellowish-white, amorphous, odorless, water-insoluble powder, ZnO, used chiefly as a paint pigment, in cosmetics, dental cements, matches, white printing inks, and opaque glass, and in medicine in the treatment of skin conditions.
- fluoridationist — One who supports the addition of fluoride to the public water supply.
- fluorochemicals — Plural form of fluorochemical.
- 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.
- focusing screen — a camera in which the image appears on a ground-glass viewer (focusing screen) after being reflected by a mirror or after passing through a prism or semitransparent glass; in one type (single-lens reflex camera) light passes through the same lens to both the ground glass and the film, while in another type (twin-lens reflex camera) light passes through one lens (viewing lens) to the ground glass and through a second lens (taking lens) to the film, the lenses being mechanically coupled for focusing.
- food insecurity — an economic and social condition of limited or uncertain access to adequate food.
- food processing — transforming raw materials into food
- fool's paradise — a state of enjoyment based on false beliefs or hopes; a state of illusory happiness.
- for pity's sake — You can say for pity's sake to add emphasis to what you are saying, especially when you are annoyed or upset.
- 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.
- force the issue — to compel decision on some matter
- foreign affairs — politics: international relations
- foreign mission — mission (def 10).
- foreign service — a division of the U.S. Department of State or of a foreign office that maintains diplomatic and consular posts and personnel in other countries.
- 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 rules — the set of rules that specify the syntax of a formal system; the algorithm that generates the well-formed formulae
- forthcomingness — coming, forth, or about to come forth; about to appear; approaching in time: the forthcoming concert.
- fortysomethings — Plural form of fortysomething.
- fourteen points — a statement of the war aims of the Allies, made by President Wilson on January 8, 1918.
- fourteen-points — a statement of the war aims of the Allies, made by President Wilson on January 8, 1918.
- fourth position — a position in which the feet are at right angles to the direction of the body, the toes pointing out, with one foot forward and the other foot back.
- fovea centralis — a small pit or depression at the back of the retina forming the point of sharpest vision.
- franz joseph ii — 1906–1989, prince of Liechtenstein 1938–89.
- frederick soddy — Frederick, 1877–1956, English chemist: Nobel prize 1921.
- free soil party — a former U.S. political party (1848–56) that opposed the extension of slavery in the Territories not yet admitted to statehood.
- fresnel mirrors — two plane mirrors so linked that a beam of light falling on them is reflected in slightly different directions, thus producing interference fringes in the area where this reflected light overlaps
- fringing forest — gallery forest.
- fructifications — Plural form of fructification.
- furniture store — shop: sells furnishings