17-letter words containing s, u, i, f
- the south pacific — the part of the Pacific Ocean to the south of the equator
- thermal diffusion — the separation of constituents, often isotopes, of a fluid under the influence of a temperature gradient.
- thiosulfuric acid — an acid, H 2 S 2 O 3 , that may be regarded as sulfuric acid with one oxygen atom replaced by sulfur.
- thistle butterfly — any nymphalid butterfly of the genus Vanessa, as the red admiral or painted lady.
- thuringian forest — a forested mountain region in central Germany: a resort area.
- transfer function — The transfer function of a circuit is the ratio of the response to the input.
- troilus butterfly — spicebush swallowtail.
- unclassified road — a road that has not been given a grade because it is of a basic standard
- under the sign of — during that portion of the year when the sun is passing through and thus subject to the influence of (a specified sign of the zodiac)
- uniformitarianism — supporting, conforming to, or derived from a theory or doctrine about uniformity, especially on the subject of geology.
- unity of interest — the equal interest in property held by joint tenants
- unofficial strike — a strike that is not approved by the strikers' trade union
- unprofessionalism — not professional; not pertaining to or characteristic of a profession.
- unselfconsciously — in an unselfconscious manner
- utmost good faith — a principle used in insurance contracts, legally obliging all parties to reveal to the others any information that might influence the others' decision to enter into the contract
- wallis and futuna — French overseas territory in the South Pacific, northeast of the Fiji Islands: it consists of two groups of islands (Wallis Islands and Futuna Islands): c. 106 sq mi (275 sq km); pop. 14,000
- year of confusion — (in ancient Rome) the year of 445 days preceding the introduction, in 46 b.c., of the Julian calendar: lengthened to compensate for the cumulative errors of the Roman calendar.