9-letter words containing f, r, o
- fibrinoid — having the characteristics of fibrin.
- fibrinous — the insoluble protein end product of blood coagulation, formed from fibrinogen by the action of thrombin in the presence of calcium ions.
- fibrocyte — an inactive fibroblast
- fibroline — a yarn made from waste products at cotton factories
- fibrolite — sillimanite.
- fibrously — In a fibrous manner.
- fieldwork — Also, field work. work done in the field, as research, exploration, surveying, or interviewing: archaeological fieldwork.
- figure on — a numerical symbol, especially an Arabic numeral.
- film noir — a motion picture with an often grim urban setting, photographed in somber tones and permeated by a feeling of disillusionment, pessimism, and despair.
- filmgoers — Plural form of filmgoer.
- filoviral — Relating to filoviruses.
- filovirus — any of several filamentous, single-stranded RNA viruses of the family Filoviridae, defined by their unique appearance and reproductive strategies, as the Ebola and Marburg viruses.
- fioritura — the ornamentation of a melody, often extemporized by the performer, as in Italian opera during the 18th century.
- fire boss — a person who inspects a mine for the presence of noxious gases, dangerous roofs, and other hazards.
- fire door — a door through which a boiler or furnace is fired or through which the fire is inspected.
- fire hose — a special heavy-duty hose for use in fighting destructive fires.
- fire opal — a red Mexican opal, often with a color play.
- fire-plow — a stick that is rubbed in a wooden groove to produce sparks for igniting a fire.
- fireboard — a board used to close a fireplace.
- firebombs — Plural form of firebomb.
- fireboxes — Plural form of firebox.
- firefloat — a boat used for firefighting
- fireflood — a procedure designed to extract more oil from a well by injecting compressed air into the ground and burning some of the oil to increase the flow.
- firehorse — a horse used to pull a horse-drawn fire engine.
- firehouse — fire station.
- firelocks — Plural form of firelock.
- firepower — the capability of a military force, unit, or weapons system as measured by the amount of gunfire, number of missiles, etc., deliverable to a target.
- fireproof — resistant to destruction by fire.
- firestone — Harvey Samuel, 1868–1938, U.S. industrialist and rubber manufacturer.
- firestorm — an atmospheric phenomenon, caused by a large fire, in which the rising column of air above the fire draws in strong winds often accompanied by rain.
- firethorn — any of several evergreen, thorny Asian shrubs belonging to the genus Pyracantha, of the rose family, many species of which are cultivated for their foliage and ornamental fruits.
- firewagon — (US) A fire engine.
- firewoman — A female firefighter.
- firewomen — Plural form of firewoman.
- fireworks — Often, fireworks. a combustible or explosive device for producing a striking display of light or a loud noise, used for signaling or as part of a celebration.
- fireworms — Plural form of fireworm.
- firozabad — a city in Uttar Pradesh state, N central India.
- first off — being before all others with respect to time, order, rank, importance, etc., used as the ordinal number of one: the first edition; the first vice president.
- firstborn — first in the order of birth; eldest.
- fish crow — a crow, Corvus ossifragus, of the Atlantic and Gulf coasts of North America, that feeds on fish, mollusks, etc.
- fish fork — a small fork having usually three tines, used for eating fish at table.
- fitzrovia — the district north of Oxford Street, London, around Fitzroy Square and its pubs, noted in the 1930s and 40s as a haunt of poets
- five-door — a car with five doors
- fivescore — (archaic) Hundred.
- flap door — Also called falling door. a door hinged at the bottom so as to fall downward and outward.
- flash rom — Flash Erasable Programmable Read-Only Memory
- flashover — Electricity. a disruptive discharge around or over the surface of a solid or liquid insulator.
- flat sour — fermentation occurring in canned foods after sealing.
- flatirons — Plural form of flatiron.
- flatworms — Plural form of flatworm.