17-letter words containing a, t, d, i, s
- trobriand islands — a group of coral islands in the Solomon Sea, north of the E part of New Guinea: part of Papua New Guinea. Area: about 440 sq km (170 sq miles)
- trucial sheikdoms — an independent federation in E Arabia, formed in 1971, now comprising seven emirates on the S coast (formerly, Pirate Coast or Trucial Coast) of the Persian Gulf, formerly under British protection: Abu Dhabi, Dubai, Sharjah, Ajman, Umm al-Qaiwain, Ras al-Khaimah (joined 1972), and Fujairah. About 32,300 sq. mi. (83,657 sq. km). Capital: Abu Dhabi. Abbreviation: U.A.E.
- turbinado (sugar) — a partially refined, granulated, pale-brown sugar obtained by washing raw sugar in a centrifuge until most of the molasses is removed
- undercompensation — to compensate or pay less than is fair, customary, or expected.
- understandability — capable of being understood; comprehensible.
- undistinguishable — to mark off as different (often followed by from or by): He was distinguished from the other boys by his height.
- unpredictableness — not predictable; not to be foreseen or foretold: an unpredictable occurrence.
- 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
- valetudinarianism — the state, condition, or habits of a valetudinarian.
- veiltail goldfish — an artificially bred, indoor variety of goldfish, usually golden or calico and of a spheroid shape, having a fully divided, drooping tail fin exceeding the body in length.
- vice-presidential — relating to a person who ranks immediately below the chief executive or head of state of a republic
- visible radiation — electromagnetic radiation that causes the sensation of sight; light. It has wavelengths between about 380 and 780 nanometres
- wade-giles system — a system of Romanization of Chinese, devised by Sir Thomas Francis Wade (1818–95) and adapted by Herbert Allen Giles (1845–1935), widely used in representing Chinese words and names in English, especially before the adoption of pinyin.
- 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
- wardrobe mistress — a woman in charge of keeping theatrical costumes cleaned, pressed, and in wearable condition.
- washington island — an island off the Door Peninsula, NE Wisconsin, in NW Lake Michigan. 20 sq. mi. (50 sq. km).
- wedding breakfast — meal served at wedding reception
- well-investigated — to examine, study, or inquire into systematically; search or examine into the particulars of; examine in detail.
- wheatstone bridge — a circuit for measuring an unknown resistance by comparing it with known resistances.
- wild sweet potato — man-of-the-earth.
- winding staircase — long set of spiral stairs
- wood preservative — a coating applied to timber as a protection against decay, insects, weather, etc
- yesterday evening — during the evening of the day preceding today
- yesterday morning — during the morning of the day preceding today