17-letter words containing r, o, s, t, c

sufficient reason — the principle that nothing happens by pure chance, but that an explanation must always be available
supercolumniation — the placing of one order of columns above another.
superconductivity — the phenomenon of almost perfect conductivity shown by certain substances at temperatures approaching absolute zero. The recent discovery of materials that are superconductive at temperatures hundreds of degrees above absolute zero raises the possibility of revolutionary developments in the production and transmission of electrical energy.
support mechanism — any formal system or method of providing support or assistance
suppressor t cell — a T cell capable of inhibiting the activity of B cells and other T cells.
sweet mock orange — the syringa, Philadelphus coronarius.
synchronistically — coincidence in time; contemporaneousness; simultaneousness.
synchronous motor — a synchronous machine that acts as a motor.
synchronous orbit — an orbit in which the orbital period of a satellite is identical to the spin period of the central body
tactile corpuscle — an oval sense organ made of flattened cells and encapsulated nerve endings, occurring in hairless skin, as the tips of the fingers and toes, and functioning as a touch receptor.
teachers' college — a college, usually having a four-year curriculum and granting a bachelor's degree, for training teachers for elementary and secondary schools
teaching software — computer software for use in providing online education
technical support — an advising and troubleshooting service provided by a manufacturer, typically a software or hardware developer, to its customers, often online or on the telephone.
telephone service — a company or public utility that provides a telephone-operating service
telescopic damper — a device with telescopic parts that reduce vibration in a motor vehicle
television screen — the flat vertical surface in a television set on which pictures are shown
tertiary consumer — a carnivore at the topmost level in a food chain that feeds on other carnivores; an animal that feeds only on secondary consumers.
the bag of tricks — every device; everything
the barbary coast — a historic name for the Mediterranean coast of North Africa: a centre of piracy against European shipping from the 16th to the 19th centuries
the carboniferous — the Carboniferous period or rock system
the cold shoulder — a show of indifference; slight
the peace process — negotiations (between governments, countries, ect) towards peace or the resolution of a conflict
thiosulfuric acid — an acid, H 2 S 2 O 3 , that may be regarded as sulfuric acid with one oxygen atom replaced by sulfur.
thread escutcheon — a raised metal rim around a keyhole.
three-course meal — A three-course meal is a meal that consists of three parts served one after the other.
to come up trumps — If you say that someone came up trumps, you mean that they did something successfully, often when they were not expected to.
to lick your lips — If you lick your lips, you move your tongue across your lips as you think about or taste something pleasant.
to make sth clear — If you make something clear, you say something in a way that makes it impossible for there to be any doubt about your meaning, wishes, or intentions.
to push your luck — If you say that someone is pushing their luck, you think they are taking a bigger risk than is sensible, and may get into trouble.
to risk your neck — If you say that someone is risking their neck, you mean they are doing something very dangerous, often in order to achieve something.
to run its course — If something runs its course or takes its course, it develops naturally and comes to a natural end.
to settle a score — If you settle a score or settle an old score with someone, you take revenge on them for something they have done in the past.
to show your face — If you show your face somewhere, you go there and see people, although you are not welcome, are rather unwilling to go, or have not been there for some time.
to strike a chord — If something strikes a chord with you, it makes you feel sympathy or enthusiasm.
top-security wing — a wing of a prison, mental hospital, etc that has a very high level of precautions against escape
tortoiseshell cat — a domestic cat, especially a female one, of variegated black, yellow, and white coloring.
trackless trolley — trolley bus.
trade association — an association of people or companies in a particular business or trade, organized to promote their common interests.
traffic diversion — a special route arranged for traffic to follow when the normal route cannot be used
transfer function — The transfer function of a circuit is the ratio of the response to the input.
transignification — (in the Eucharist) a change in the significance of the bread and wine to symbolize the body and blood of Christ.
transitory action — an action that can be brought in any country regardless of where it originated
transonic barrier — sound barrier.
triboluminescence — luminescence produced by friction, usually within a crystalline substance.
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.
turbosupercharger — (formerly) a turbocharger.
turn of the screw — a short novel (1898) by Henry James.
turn-down service — In a hotel, a turn-down service is the preparation of a room for a guest to sleep in by slightly turning back the comforter on the bed, turning down the lights, and so on.
ultraconservative — extremely conservative, especially in politics.
uncomfortableness — causing discomfort or distress; painful; irritating.

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