17-letter words containing a, i, m, t
- transmission line — a system of conductors, as coaxial cable, a wave guide, or a pair of parallel wires, used to transmit signals.
- triangular matrix — a square matrix in which either all the entries above the principal diagonal, or all the entries below the principal diagonal, are zero.
- tridimensionality — having three dimensions.
- trigger mechanism — a physiological or psychological process caused by a stimulus and resulting in a usually severe reaction.
- tropical aquarium — an aquarium designed for the maintenance and breeding of tropical fish and kept at a suitably warm temperature.
- tropical maritime — a type of warm, wet air mass originating at low latitudes over ocean areas
- 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.
- tympanic membrane — eardrum.
- ultimate strength — the quantity of the utmost tensile, compressive, or shearing stress that a given unit area of a certain material is expected to bear without failing.
- 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.
- uncle tom's cabin — an antislavery novel (1852) by Harriet Beecher Stowe.
- uncompassionately — having or showing compassion: a compassionate person; a compassionate letter.
- unconformity trap — An unconformity trap is a hydrocarbon trap where the closure is made by an unconformity (= a formation of rock layers which represents a gap in the geological record).
- undercompensation — to compensate or pay less than is fair, customary, or expected.
- uniformitarianism — supporting, conforming to, or derived from a theory or doctrine about uniformity, especially on the subject of geology.
- unimaginativeness — the quality of being unimaginative
- unsympathetically — in a manner that is not characterized by feeling or showing sympathy
- urogenital system — the urinary tract and reproductive organs
- 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
- utopian socialism — (sometimes initial capital letter) an economic system based on the premise that if capital voluntarily surrendered its ownership of the means of production to the state or the workers, unemployment and poverty would be abolished.
- vacuum aspiration — menstrual extraction.
- vacuum extraction — applying suction to a baby's head during birth to help it emerge
- valetudinarianism — the state, condition, or habits of a valetudinarian.
- variable-geometry — denoting an aircraft in which the wings are hinged to give the variable aspect ratio colloquially known as a swing-wing
- varix lymphaticus — a similar condition affecting an artery or lymphatic vessel
- velaric airstream — a current of mouth air produced by the action of the tongue, operant in forming click sounds.
- 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.
- vestibular system — the sensory mechanism in the inner ear that detects movement of the head and helps to control balance
- victor emmanuel i — 1759–1824, king of Sardinia 1802–21.
- village community — an early form of community organization in which land belonged to the village, the arable land being allotted to the members or households of the community by more or less permanent arrangements and the waste or excess land remaining undivided.
- vitamin b complex — an important group of water-soluble vitamins containing vitamin B 1 , vitamin B 2 , etc.
- 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.
- waianae mountains — a mountain range in W Oahu, Hawaii. Highest peak, Mount Kaala, 4025 feet (1228 meters).
- waist measurement — a measure of the circumference of the narrowest part of a person's waist
- walk-in apartment — a ground-floor apartment having a private entrance directly from the street, rather than through a hallway of the building.
- wallowa mountains — a mountain range in NE Oregon. Highest peak, Sacajawea Peak, 9838 feet (2999 meters).
- war establishment — the full wartime complement of men, equipment, and vehicles of a military unit
- wardrobe mistress — a woman in charge of keeping theatrical costumes cleaned, pressed, and in wearable condition.
- water lily family — the plant family Nymphaeaceae, characterized by aquatic herbaceous plants having usually broad leaves, solitary, often showy flowers, and fruit in a variety of forms, and including the lotus (genus Nelumbo), spatterdock, water lily, and water shield.
- welsh nationalism — the political belief that Wales should be independent
- westminster abbey — a Gothic church in London, England.
- white-nationalism — white supremacy.
- wimshurst machine — a device for the production of electric charge by electrostatic induction, consisting of two oppositely rotating glass or mica disks carrying metal strips upon which charges are induced and subsequently removed by contact with metallic combs.
- wire entanglement — a barbed-wire obstacle, usually mounted on posts and zigzagged back and forth along a front, designed to channel, delay, or halt an advance by enemy foot soldiers.
- withdrawal method — a method of contraception in which the man withdraws his penis from the woman's vagina before ejaculation
- witness statement — account of sb who saw an incident
- wrangell-mountain — Mount, an active volcano in SE Alaska, in the Wrangell Mountains. 14,006 feet (4269 meters).
- x image extension — (XIE) Extensions to the X protocol to handle images.