12-letter words containing o, r, i
- 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.
- foetoprotein — Alternative spelling of fetoprotein.
- folding door — a door with hinged sections that can be folded flat against one another when opened.
- 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.
- folkloristic — the traditional beliefs, legends, customs, etc., of a people; lore of a people.
- followership — the ability or willingness to follow a leader.
- food pyramid — successive levels of predation in a food chain represented schematically as a pyramid because upper levels normally consist of decreasing numbers of larger predators.
- food service — the preparation, delivery, serving, etc., of ready-to-eat foods: The cafeteria employs over 20 people in food service.
- foolhardiest — Superlative form of foolhardy.
- foot soldier — an infantryman.
- foot traffic — the wear and tear caused to a surface by people walking on it
- footdragging — the act or practice of acting with deliberate slowness
- footsoldiers — Plural form of footsoldier.
- for a giggle — as a joke or prank; not seriously
- for all time — forever, for eternity
- for instance — a case or occurrence of anything: fresh instances of oppression.