23-letter words containing f, a, i, n
- traffic-light labelling — a system of food labelling in which red, amber, and green symbols are used to indicate whether the food contains high, medium, or low amounts of sugar, fat, salt, etc
- transcendental function — a function that is not an algebraic function.
- transfer characteristic — the relationship between output and input of an electronic or electromechanical system, esp as depicted graphically
- twin-lens reflex camera — a camera in which the image appears on a ground-glass viewer (focusing screen) after being reflected by a mirror or after passing through a prism or semitransparent glass; in one type (single-lens reflex camera) light passes through the same lens to both the ground glass and the film, while in another type (twin-lens reflex camera) light passes through one lens (viewing lens) to the ground glass and through a second lens (taking lens) to the film, the lenses being mechanically coupled for focusing.
- uniform commercial code — a codification of commercial laws designed to provide uniformity among the states
- unipress software, inc. — (company) A developer and distributor of Unix software. They produce PC-UNIX connectivity software, development tools and applications and provide technical support and maintenance, porting services, training and consulting.
- united church of canada — the largest Protestant denomination in Canada, formed in the 1920s by incorporating some Presbyterians and most Methodists
- united states air force — the permanent or regular military air force of the United States, established in 1947 as a separate service under the authority of the Department of Defense: a branch of the U.S. Army before 1947. Abbreviation: USAF.
- united states of brazil — former official name of Brazil.
- university of minnesota — (body, education) The home of Gopher. Address: Minneapolis, Minnesota, USA.
- urea-formaldehyde resin — any of a group of resins formed by the interaction of urea and formaldehyde under conditions that include heat and pH control: used chiefly in the manufacture of buttons, baking enamels, and for making fabrics wrinkle-resistant.
- urinary tract infection — infection of any part of the urinary tract, especially the urethra or bladder, usually caused by a bacterium, Escherichia coli, and often precipitated by increased sexual activity, vaginitis, enlargement of the prostate, or stress. Abbreviation: UTI.
- user interface language — (language, graphics) (UIL) A language for specifying widget hierarchies etc. in OSF/Motif and DECwindows.
- variable life insurance — an insurance policy whose annuity payments or payment to the beneficiary are not fixed but depend on the income earned by the investment of the premiums.
- velocity of circulation — the frequency with which a single unit of currency or the total money supply turns over within the economy in a given year.
- verifiability principle — the doctrine that if a nonanalytic statement is to be cognitively meaningful it must be empirically verifiable.
- weak inter-action force — a force between elementary particles that causes certain processes that take place with low probability, as radioactive beta-decay and collisions between neutrinos and other particles.
- wordperfect corporation — (company) The original developers of the WordPerfect word processor and a variety of other applications for personal computers. WordPerfect was founded in Provo, Utah, USA in 1979 by Alan Ashton and Bruce Bastion as "Satellite Software International". The company name was changed to Wordperfect Corporation in 1986. The company was bought by Novell, Inc. in 1994, who then sold it to Corel Corporation in 1996.