18-letter words containing r, o, t, u, n

thin on the ground — If people or things of a particular kind are thin on the ground, there are very few of them.
thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
thought experiment — Physics. a demonstration or calculation that is based on the postulates of a theory, as relativity, and that demonstrates or clarifies the consequences of the postulates.
thrift-institution — economical management; economy; frugality.
to bare one's soul — If you bare your soul, you tell someone your most secret thoughts and feelings.
to be above ground — to be alive
to close your mind — If you close your mind to something, you deliberately do not think about it or pay attention to it.
to cross your mind — If you say that an idea or possibility never crossed your mind, you mean that you did not think of it.
to gird your loins — If you gird your loins, you prepare to do something difficult or dangerous.
to lose your nerve — If you lose your nerve, you suddenly panic and become too afraid to do something that you were about to do.
to open your heart — If you open your heart or pour out your heart to someone, you tell them your most private thoughts and feelings.
to put years on sb — if you say that something such as an experience or a way of dressing has put years on someone, you mean that it has made them look or feel much older
to speak your mind — If you speak your mind, you say firmly and honestly what you think about a situation, even if this may offend or upset people.
torsion-free group — a group in which every element other than the identity has infinite order.
transubstantiation — the changing of one substance into another.
tristan und isolde — a music drama (composed, 1857–59; première, 1865) by Richard Wagner.
true to one's word — If you are true to your word or as good as your word, you do what you say you will do.
tune someone grief — to annoy or harass someone
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.
turn in on oneself — to withdraw or cause to withdraw from contact with others and become preoccupied with one's own problems
turn on one's heel — to turn around abruptly
turn one's back on — the rear part of the human body, extending from the neck to the lower end of the spine.
turn one's hand to — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
turn up one's nose — to behave disdainfully towards (something)
turn up one's toes — to die
two-minute warning — a time-out called by an official to notify both teams that two minutes remain in a half.
ultralow frequency — an electromagnetic wave with a frequency between 300 and 3000 hertz. Abbreviation: ULF, ulf.
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
ultrasound scanner — a device used to examine an internal bodily structure by the use of ultrasonic waves, esp for the diagnosis of abnormality in a fetus
under one's breath — the air inhaled and exhaled in respiration.
under the aegis of — guided or protected by
under the jackboot — If a country or group of people is under the jackboot, they are suffering because the government is cruel and undemocratic.
under-compensation — to compensate or pay less than is fair, customary, or expected.
under-depreciation — decrease in value due to wear and tear, decay, decline in price, etc.
under-registration — the act of registering.
unfair competition — acts done by a seller to confuse or deceive the public with intent to acquire a larger portion of the market, as by cutting prices below cost, misleading advertising, selling a spurious product under a false identity, etc.
unification church — a religious sect that combines elements of Protestantism and Buddhism, founded by the Rev. Sun Myung Moon in 1954: many of its members live in communes sponsored by the sect.
unisys corporation — (company) The company formed in 1984-5 when Burroughs Corporation merged with Sperry Corporation. This was when the phrase "dinosaurs mating" was coined. Unisys is one of the largest providers of information services, technology, and software in the world. They employ about 49,000 people and do business in some 100 countries. In 1994 about 80 percent of revenue was derived from commercial information systems and services, with the remainder coming from electronic systems and services for the defense market. The defense business was sold to Loral in early 1995. Slightly more than half of Unisys's revenue is from business in the United States. They specialise in providing business-critical solutions, based on open information networks, for organisations that operate in transaction-intensive environments. These organisations include financial services companies, airlines, telecommunications companies, government agencies, and other commercial enterprises. In August 1994, quarterly sales were $1799M and profits $50M.
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.
up to one's tricks — If you say that someone is up to their tricks or up to their old tricks, you disapprove of them because they are behaving in the dishonest or deceitful way in which they typically behave.
upper partial tone — overtone (def 1).
urban contemporary — popular dance music incorporating elements of rap, rhythm-and-blues, funk, and soul.
urban homesteading — homesteading (def 2).
uriniferous tubule — a urine-bearing tubule in a nephron of a kidney.
veterinary surgeon — Chiefly British. a veterinarian.
victor emmanuel ii — 1820–78, king of Sardinia 1849–78; first king of Italy 1861–78.
vigoureux printing — a printing method in which worsted fibers are printed with the desired color while in sliver form and then processed into yarn, producing a mixed color in the spun yarn and woven fabric.
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.

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