12-letter words containing f, r, i, o
- fish factory — a factory where fish is processed
- fisherpeople — Plural form of fisherperson.
- fisherperson — A fisherman or fisherwoman.
- fishing port — a town which has a lot of fishing boats
- fishing worm — an earthworm.
- fishmonger's — a shop that sells fish
- fissirostral — having a broad, deeply cleft beak or bill, as the swallows and goatsuckers.
- fitness room — a room with gym equipment in it
- fitting room — a room, as in a clothing store, where garments are tried on and measurements taken for alterations or other changes.
- 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.
- flagelliform — long, slender, and flexible, like the lash of a whip.
- flammiferous — flame-producing
- flavoprotein — an enzyme, containing riboflavin and linked chemically with a protein, active in the oxidation of foods in animal cells.
- fleet prison — (formerly) a London prison, esp used for holding debtors
- flickermouse — Alternative form of flittermouse.
- flight arrow — an arrow having a conical or pyramidal head without barbs.
- flightworthy — being in proper physical or mechanical condition for safe flight; airworthy: a flightworthy spacecraft.
- flindermouse — (obsolete) A bat (the mammal).
- flip-flopper — a person who makes a complete change of policy, opinion, etc
- flittermouse — bat2 (def 1).
- 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.
- 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 polish — a substance used to polish floors
- floor-filler — a dance recording that is so catchy and popular that everyone in the place where it is played wants to dance
- flooring saw — a saw having a curved edge.
- flop forging — forging of both sides of a piece from the same die, the sides being identical.
- floppy drive — disk drive
- floriculture — the cultivation of flowers or flowering plants, especially for ornamental purposes.
- florida keys — chain of small islands extending southwest from the S tip of Fla.
- florida moss — Spanish moss.
- florida room — a sunroom.
- flour sifter — a container in which flour is sifted
- flourishment — The act or state of flourishing.
- flow breccia — a volcanic breccia that has solidified from a lava flow.
- flowcharting — (computing) the design and construction of flowcharts.
- flower child — (especially in the 1960s) a young person, especially a hippie, rejecting conventional society and advocating love, peace, and simple, idealistic values.
- 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.
- fluoresceine — Alternative spelling of fluorescein.
- fluoridating — Present participle of fluoridate.
- fluoridation — the addition of fluorides to the public water supply to reduce the incidence of tooth decay.
- fluorimeters — Plural form of fluorimeter.
- fluorimetric — Alternative form of fluorometric.
- fluorinating — Present participle of fluorinate.
- fluorination — (chemistry) The introduction of fluorine into a compound by means of a chemical reaction.
- fluorometric — Of, pertaining to, or measured using fluorometry.
- fluoroscopic — of or relating to the fluoroscope or fluoroscopy.
- fluorouracil — a pyrimidine analog, C 4 H 3 FN 2 O 2 , used in the treatment of certain cancers.
- flusteration — (colloquial, dated) The act of flustering, or the state of being flustered.
- fluviomarine — of or formed by the combined action of river and sea.