12-letter words containing a, f, r, o
- fire company — a company of firefighters.
- fire station — a building in which firefighting apparatus and usually fire department personnel are housed; firehouse.
- first nation — any of the indigenous peoples or Indian communities of Canada, especially one formally recognized by the Canadian government.
- first of all — to start with
- firth of tay — the estuary of the River Tay on the North Sea coast of Scotland. Length: 40 km (25 miles)
- fish factory — a factory where fish is processed
- fissirostral — having a broad, deeply cleft beak or bill, as the swallows and goatsuckers.
- flabelliform — Shaped like a fan; flabellate.
- flag officer — a naval officer above the rank of captain, as a fleet admiral, admiral, vice-admiral, rear admiral, or commodore, who is entitled to display a flag indicating his or her rank.
- flagellators — Plural form of flagellator.
- flagellatory — relating to flagellation
- flagelliform — long, slender, and flexible, like the lash of a whip.
- flame carbon — a carbon electrode containing metallic salts that colour the arc in a flame-arc light
- flameproofed — Simple past tense and past participle of flameproof.
- flameproofer — any agent which renders something flameproof
- flamethrower — a weapon, either mounted or portable, that sprays ignited incendiary fuel for some distance.
- flammiferous — flame-producing
- flannelboard — a flannel-covered surface to which other flannel pieces, as letters of the alphabet, numbers, etc., adhere merely by contact, used mainly in schools as a visual aid.
- flash memory — Computers. a type of reprogrammable memory that retains information even with the power turned off.
- flash powder — powder that could be ignited to provide a bright light to take a photograph
- flashforward — a device in the narrative of a motion picture, novel, etc., by which a future event or scene is inserted into the chronological structure of the work.
- flatterously — in a flatterous manner
- flavoprotein — an enzyme, containing riboflavin and linked chemically with a protein, active in the oxidation of foods in animal cells.
- flavorlessly — In a flavorless way.
- flight arrow — an arrow having a conical or pyramidal head without barbs.
- float around — A rumour or idea that is floating around is often heard or talked about.
- float bridge — a bridge, as from a pier to a boat, floating at one end and hinged at the other to permit loading and unloading at any level of water.
- float collar — A float collar is a part near the bottom of the casing string which catches the bottom plug and top plug, and which prevents mud from entering the casing.
- floating rib — one member of the two lowest pairs of ribs, which are attached neither to the sternum nor to the cartilages of other ribs.
- floor leader — the majority leader or minority leader in either the Senate or the House of Representatives.
- floor sample — an appliance, piece of furniture, or other article of merchandise that has been used for display or demonstration and is usually offered at a reduced price.
- floor trader — a member of a stock or commodity exchange who executes orders on the floor of the exchange for his or her own account.
- floor-manage — to act as or in the manner of a floor manager.
- flooring saw — a saw having a curved edge.
- floorwalkers — Plural form of floorwalker.
- florida keys — chain of small islands extending southwest from the S tip of Fla.
- florida moss — Spanish moss.
- florida room — a sunroom.
- flour shaker — a container, often with a perforated top, from which flour is shaken
- flow breccia — a volcanic breccia that has solidified from a lava flow.
- flow pattern — The flow pattern is the way in which fluids move through a reactor.
- flowcharting — (computing) the design and construction of flowcharts.
- fluoranthene — (organic compound) A polycyclic aromatic hydrocarbon consisting of a benzene ring attached to each of the rings of a naphthalene molecule; it is carcinogenic, and is a product of incomplete combustion.
- fluorapatite — a crystalline mineral, Ca 5 (PO 4) 3 F, formed from hydroxyapatite in the presence of fluoride, that has a hardening effect on bones and teeth.
- fluoridating — Present participle of fluoridate.
- fluoridation — the addition of fluorides to the public water supply to reduce the incidence of tooth decay.
- fluorinating — Present participle of fluorinate.
- fluorination — (chemistry) The introduction of fluorine into a compound by means of a chemical reaction.
- fluorocarbon — any of a class of compounds produced by substituting fluorine for hydrogen in a hydrocarbon, and characterized by great chemical stability: used chiefly as a lubricant, refrigerant, fire extinguishing agent, and in industrial and other applications in which chemical, electrical, flame, and heat resistance is essential; banned as an aerosol propellant in the U.S. because of concern about ozone layer depletion.
- fluorography — photofluorography.