12-letter words containing o, d, r, i, f
- field ration — ration issued and authorized for troops in the field.
- field sports — sports carried on in the open countryside, such as hunting, shooting, or fishing
- field theory — a detailed mathematical description of the distribution and movement of matter under the influence of one or more fields.
- field-holler — a cry employing falsetto, portamento, and sudden changes of pitch, used in African-American work songs, later integrated into the techniques of the blues
- fig marigold — any of various plants of the genus Mesembryanthemum, having showy flowers of white, yellow, or pink.
- fingerboards — Plural form of fingerboard.
- firing order — the sequence of ignition in the cylinders of an internal-combustion engine
- flindermouse — (obsolete) A bat (the mammal).
- 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.
- floppy drive — disk drive
- florida keys — chain of small islands extending southwest from the S tip of Fla.
- florida moss — Spanish moss.
- florida room — a sunroom.
- flower child — (especially in the 1960s) a young person, especially a hippie, rejecting conventional society and advocating love, peace, and simple, idealistic values.
- fluoridating — Present participle of fluoridate.
- fluoridation — the addition of fluorides to the public water supply to reduce the incidence of tooth decay.
- 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.
- 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.
- footdragging — the act or practice of acting with deliberate slowness
- footsoldiers — Plural form of footsoldier.
- forbiddingly — In a forbidding manner.
- foreadmonish — (rare, transitive) To admonish beforehand, or before the act or event.
- forebodingly — a prediction; portent.
- forebuilding — (architecture,historical) An outer defense work of a castle used to protect the entrance to the keep.
- foredestined — Simple past tense and past participle of foredestine.
- foreign body — object lodged where it does not belong
- foreordained — to ordain or appoint beforehand.
- foreordinate — foreordain.
- forked chain — branched chain.
- formularized — Simple past tense and past participle of formularize.
- fort detrick — a military reservation in N Maryland, NW of Frederick.
- fort madison — a city in SE Iowa, on the Mississippi.
- fortified pa — a Māori hilltop dwelling with trenches and palisades for defensive occupation
- forward bias — a voltage applied to a circuit or device, esp a semiconductor device, in the direction that produces the larger current
- forward dive — a dive from a position facing the water in which the diver jumps up from the springboard, rotating the body forward, and enters the water either headfirst or feetfirst.
- forward line — the soldiers at the forward most position in an army force
- foster child — a child raised by someone who is not its natural or adoptive parent.
- foundationer — a person supported by funds from a foundation, or serving as a member of a foundation
- four-engined — (of an aircraft) having four engines
- four-in-hand — a long necktie to be tied in a slipknot with the ends left hanging.
- fourdriniers — Plural form of fourdrinier.
- fractionated — Simple past tense and past participle of fractionate.
- freedom ride — (especially in the 1960s) a bus trip made to parts of the southern U.S. by persons engaging in efforts to integrate racially segregated public facilities.
- fried potato — Fried potatoes are pieces of potato cooked in oil or fat.
- friend-court — amicus curiae.
- frondiferous — Producing fronds.