17-letter words containing t, r, i, a, l, o
- tropical medicine — the branch of medicine dealing with the study and treatment of diseases occurring in the tropics.
- 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.
- ultraconservative — extremely conservative, especially in politics.
- ultrametamorphism — metamorphism during which the temperature of a rock exceeds its melting point.
- ultramicrobalance — a balance for weighing precisely, to a hundredth of a microgram or less, minute quantities of material.
- unofficial strike — a strike that is not approved by the strikers' trade union
- unproportionately — proportioned; being in due proportion; proportional.
- upper paleolithic — See under Paleolithic.
- urban exploration — a recreational activity in which people explore derelict urban structures such as abandoned sewers or underground railways or attempt to access areas which are closed to the public such as the roofs of skyscrapers
- urogenital system — the urinary tract and reproductive organs
- variable-geometry — denoting an aircraft in which the wings are hinged to give the variable aspect ratio colloquially known as a swing-wing
- vernacularization — to translate into the natural speech peculiar to a people.
- vertical mobility — movement from one social level to a higher one (upward mobility) or a lower one (downward mobility) as by changing jobs or marrying.
- vibrofluidization — Vibrofluidization is when vibration is used to make particles move in a fluidized bed.
- victor emmanuel i — 1759–1824, king of Sardinia 1802–21.
- visible radiation — electromagnetic radiation that causes the sensation of sight; light. It has wavelengths between about 380 and 780 nanometres
- visitors' gallery — a balcony in a building such as a parliament or court where members of the public can sit
- voidable contract — a contract or agreement that is capable of being made of no legal effect or made void
- wang laboratories — (body) Computer manufacturer, known for their office automation products and the Wang PC. Quarterly sales $208M, profits $3M (Aug 1994).
- water tube boiler — a boiler for generating steam by passing water in tubes (water tubes) through flames and hot gases.
- water-tube boiler — a boiler for generating steam by passing water in tubes (water tubes) through flames and hot gases.
- willow flycatcher — a North American flycatcher, Empidonax alnorum, of alder thickets and other moist areas, that has greenish-brown upper parts and whitish underparts and is almost indistinguishable except by voice from E. traillii (willow flycatcher)
- wind chill factor — A wind chill factor is a measure of the cooling effect of the wind on the temperature of the air.
- wind-chill factor — the apparent temperature felt on the exposed human body owing to the combination of temperature and wind speed.
- wireless operator — a radio operator
- withdrawal method — a method of contraception in which the man withdraws his penis from the woman's vagina before ejaculation
- wrangell-mountain — Mount, an active volcano in SE Alaska, in the Wrangell Mountains. 14,006 feet (4269 meters).
- yellow water lily — any of several water lilies, as the spatterdock, Nuphar luteum, having yellow flowers.
- yield to maturity — The yield to maturity of a bond is the rate of return on the bond if it is held to its maturity date.
- zebra swallowtail — a swallowtail butterfly, Papilio marcellus, having black and greenish-white stripes on the wings.