18-letter words containing a, l, i, t, r, u
- the masurian lakes — a group of lakes in Masuria in NE Poland: scene of Russian defeats by the Germans (1914, 1915) during World War I
- the sun also rises — a novel (1926) by Ernest Hemingway.
- the-master-builder — a play (1892) by Ibsen.
- theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
- thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
- to play favourites — to display favouritism
- tranquillizer dart — a dart filled with a tranquillizer that is shot from a gun in order to temporarily sedate an animal so that it may be handled safely
- tristan und isolde — a music drama (composed, 1857–59; première, 1865) by Richard Wagner.
- tristimulus values — three values that together are used to describe a colour and are the amounts of three reference colours that can be mixed to give the same visual sensation as the colour considered
- turbine ventilator — a ventilator, usually mounted on the roof of a building, deck of a ship, etc., having at its head a globular, vaned rotor that is rotated by the wind, conveying air through a duct to and from a chamber below.
- ulcerative colitis — chronic ulceration in the large intestine, characterized by painful abdominal cramps and profuse diarrhea containing pus, blood, and mucus.
- ultrasonic testing — the scanning of material with an ultrasonic beam, during which reflections from faults in the material can be detected: a powerful nondestructive test method
- ultrasonic welding — the use of high-energy vibration of ultrasonic frequency to produce a weld between two components which are held in close contact
- ultraviolet filter — a filter used on a lens to absorb ultraviolet radiation that may impart an undesirable blue cast to a photograph.
- unilateral neglect — a symptom of brain damage in which a person is unaware of one side of his or her body and of anything in the external world on the same side
- universal negative — a proposition of the form “No S is P.” Symbol: E, e.
- universalizability — the thesis that any moral judgment must be equally applicable to every relevantly identical situation
- university faculty — a division within a university comprising one subject area, or a number of related subject areas
- unix international — (body) (UI) A consortium including Sun, AT&T and others formed to promote an open environment based on Unix System V, including the Open Look windowing system.
- upper palaeolithic — the latest of the three periods of the Palaeolithic, beginning about 40 000 bc and ending, in Europe, about 12 000 bc: characterized by the emergence of modern man, Homo sapiens
- upper partial tone — overtone (def 1).
- venture capitalist — funds invested or available for investment in a new or unproven business enterprise.
- victor emmanuel ii — 1820–78, king of Sardinia 1849–78; first king of Italy 1861–78.
- voluntary abortion — abortion (def 1).
- voluntary-abortion — Also called voluntary abortion. the removal of an embryo or fetus from the uterus in order to end a pregnancy.
- wildlife sanctuary — an area where wild animals and plants are protected
- wrangell mountains — a mountain range in SE Alaska, extending into the Yukon, Canada. Highest peak: Mount Blackburn, 5037 m (16 523 ft)
- yves saint laurent — Louis Stephen [lwee ste-fen] /lwi stɛˈfɛn/ (Show IPA), 1882–1973, prime minister of Canada 1948–57.