12-letter words containing f, e, r, o
- flash powder — powder that could be ignited to provide a bright light to take a photograph
- 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.
- fleet prison — (formerly) a London prison, esp used for holding debtors
- flesh colour — of a yellowish-pink to yellowish-grey colour roughly that of the skin of a white person
- flickermouse — Alternative form of flittermouse.
- 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.
- floor broker — a member of a stock or commodity exchange who executes orders on the floor of the exchange for other brokers.
- floor leader — the majority leader or minority leader in either the Senate or the House of Representatives.
- floor pocket — one of several metal boxes placed backstage in the floor (floor pocket) or wall of a theater and containing jacks for electric cables used in lighting units.
- 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-filler — a dance recording that is so catchy and popular that everyone in the place where it is played wants to dance
- floor-length — extending to the floor: a floor-length skirt.
- floor-manage — to act as or in the manner of a floor manager.
- floorwalkers — Plural form of floorwalker.
- 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.
- flour beetle — any of several brown darkling beetles, especially of the genus Tribolium, that infest, breed in, feed on, and often pollute flour, stored grain, and other stored produce.
- flour shaker — a container, often with a perforated top, from which flour is shaken
- 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.
- flow pattern — The flow pattern is the way in which fluids move through a reactor.
- flower child — (especially in the 1960s) a young person, especially a hippie, rejecting conventional society and advocating love, peace, and simple, idealistic values.
- flower power — Flower power is an old-fashioned way of referring to hippies and the culture associated with hippies in the late 1960s and early 1970s.
- flowerpecker — any of numerous small, arboreal, usually brightly colored oscine birds of the family Dicaeidae, of southeastern Asia and Australia.
- 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.
- fluoresceine — Alternative spelling of fluorescein.
- fluorescence — the emission of radiation, especially of visible light, by a substance during exposure to external radiation, as light or x-rays. Compare phosphorescence (def 1).
- fluorescents — Plural form of fluorescent.
- fluorimeters — Plural form of fluorimeter.
- fluorimetric — Alternative form of fluorometric.
- fluorochrome — any of a group of fluorescent dyes used to label biological material.
- fluorometers — Plural form of fluorometer.
- fluorometric — Of, pertaining to, or measured using fluorometry.
- fluoroscoped — Simple past tense and past participle of fluoroscope.
- fluoroscopes — Plural form of fluoroscope.
- flusteration — (colloquial, dated) The act of flustering, or the state of being flustered.
- flutterboard — a kickboard.
- fluviomarine — of or formed by the combined action of river and sea.
- focus puller — the member of a camera crew who adjusts the focus of the lens as the camera is tracked in or out
- foetoprotein — Alternative spelling of fetoprotein.
- folding rule — a rule composed of light strips of wood joined by rivets so as to be foldable, all the opening and closing parts being in parallel planes.