16-letter words containing o, d, i, f
- first-aid worker — someone who is trained to give immediate medical help in an emergency
- flight indicator — artificial horizon (def 3).
- floridean starch — the storage polysaccharide of red algae.
- fluosilicic acid — an unstable acid, H 2 SiF 6 , known only in its colorless, poisonous, fuming aqueous solution or in the form of its salts: used chiefly as a wood preservative, a disinfectant, and as a hardening agent in the manufacture of ceramic ware, cement, and concrete.
- food intolerance — an intolerance of a specific type of food, causing an adverse reaction
- food irradiation — the exposure of food to electromagnetic radiation to kill bacteria and retard deterioration
- fool around with — have casual sex
- foot in the door — If you say that something helps someone to get their foot in the door or their toe in the door, you mean that it gives them an opportunity to start doing something new, usually in an area that is difficult to succeed in.
- footsteps editor — the technician who adds sound effects, such as doors closing, rain falling, etc, during the postproduction sound-dubbing process
- for the duration — If you say that something will happen for the duration, you mean that it will happen for as long as a particular situation continues.
- forbid the banns — to raise an objection to a marriage announced in this way
- forced vibration — Forced vibration is a type of vibration in which a force is repeatedly applied to a mechanical system.
- fore and aft rig — a sail set in a line from one end the other of a vessel rather than in a square
- fore-and-aft rig — a rig in which the principal sails are fore-and-aft.
- forked lightning — Forked lightning is lightning that divides into two or more parts near the ground.
- forward analysis — An analysis which determines properties of the output of a program from properties of the inputs.
- forward chaining — A data-driven technique used in constructing goals or reaching inferences derived from a set of facts. Forward chaining is the basis of production systems. Oppose backward chaining.
- forward delivery — delivery at a future date.
- forward planning — business: making future provisions
- forward-thinking — planning or tending to plan for the future; forward-looking.
- forwarding agent — freight forwarder.
- foundation stone — any of the stones composing the foundation of a building.
- four-deal bridge — a version of bridge in which four hands only are played, the players then cutting for new partners
- four-dimensional — of a space having points, or a set having elements, which require four coordinates for their unique determination.
- four-masted brig — jackass bark (def 2).
- four-wheel drive — a drive system in which engine power is transmitted to all four wheels for improved traction.
- fourth dimension — Physics, Mathematics. a dimension in addition to length, width, and depth, used so as to be able to employ geometrical language in discussing phenomena that depend on four variables: Time is considered a fourth dimension for locating points in space-time.
- fraises des bois — wild strawberries
- francis townsend — Francis Everett, 1867–1960, U.S. physician and proposer of the Townsend plan.
- french directory — the body of five directors in power in France from 1795 until their overthrow by Napoleon in 1799
- french indochina — an area in SE Asia, formerly a French colonial federation including Cochin-China, the protectorates of Annam, Cambodia, Tonkin, and Laos, and the leased territory of Kwangchowan: now comprising the three independent states of Vietnam, Cambodia, and Laos. Capital: Hanoi.
- friction welding — a method of welding thermoplastics or metals by the heat generated by rubbing the members to be joined against each other under pressure.
- friedrich wohler — Friedrich [free-drikh] /ˈfri drɪx/ (Show IPA), 1800–82, German chemist.
- friendly society — law: mutual group providing benefits
- fringed polygala — a North American milkwort, Polygala paucifolia, having flowers with purplish-pink, winglike petals and a fringed tube.
- frontier dispute — a conflict concerning a frontier between countries and which usually involves those countries
- funeral director — a person, usually a licensed embalmer, who supervises or conducts the preparation of the dead for burial and directs or arranges funerals.
- gazetted officer — (in India) a senior official whose appointment is published in the government gazette
- gender-profiling — the use of personal characteristics or behavior patterns to make generalizations about a person, as in gender profiling.
- gold certificate — a former U.S. paper currency issued by the federal government for circulation from 1865 to 1933, equal to and redeemable for gold to a stated value.
- good-for-nothing — worthless; of no use.
- group identifier — (operating system) (gid) A unique number, between 0 an 32767, identifying a set of users under Unix. Gids are found in the /etc/passwd and /etc/group databases (or their NIS equivalents) and one is also associated with each file, indicating the group to which its group permissions apply.
- gulf of liaodong — the N part of the Gulf of Chihli, west of the Liaodong Peninsula
- gulf of thailand — an arm of the South China Sea between the Malay Peninsula and Indochina
- half life period — Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
- half-blind joint — a corner dovetail joint visible on one face only.
- head post office — the main post office in a town
- hold a brief for — to argue for; champion
- homme d'affaires — a businessman.
- hopfield network — (artificial intelligence) (Or "Hopfield model") A kind of neural network investigated by John Hopfield in the early 1980s. The Hopfield network has no special input or output neurons (see McCulloch-Pitts), but all are both input and output, and all are connected to all others in both directions (with equal weights in the two directions). Input is applied simultaneously to all neurons which then output to each other and the process continues until a stable state is reached, which represents the network output.