18-letter words containing n, o, r, i, s

strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
strong derived set — the set of all strong accumulation points of a given set.
strong interaction — the interaction between gluons and between gluons and quarks that is responsible for the strong force.
strontium monoxide — a white insoluble solid substance used in making strontium salts and purifying sugar. Formula: SrO
student councillor — a student who is a member of a council or body representing the interests of students at a school, university or college
subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
subsidiary company — a company whose controlling interest is owned by another company.
sugarloaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
sun-dried tomatoes — tomatoes that have been dried or preserved by exposure to the sun
sunflower seed oil — the oil extracted from sunflower seeds, used as a salad oil, in the manufacture of margarine, etc
super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
superior vena cava — See under vena cava.
superstring theory — any supersymmetric string theory in which each type of elementary particle is treated as a vibration of a single fundamental string (superstring) at a particular frequency.
supporting actress — an actress playing a supporting role
sustaining program — a radio or television program without a commercial sponsor.
symmetric function — a polynomial in several indeterminates that stays the same under any permutation of the indeterminates.
synthetic geometry — elementary geometry, as distinct from analytic geometry.
system-programming — a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
take out insurance — take out insurance against something
temporal summation — the act or process of summing.
the bird has flown — the person in question has fled or escaped
the hotel industry — the branch of the services industry which provides hotels
the movie industry — the industry that makes entertainment films or movies
the nether regions — the genitals
the northern irish — the people who live in or come from Northern Ireland
the sun also rises — a novel (1926) by Ernest Hemingway.
the uncircumcision — the gentiles
there's no telling — You use there's no telling to introduce a statement when you want to say that it is impossible to know what will happen in a situation.
thermoluminescence — phosphorescence produced by the heating of a substance.
thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
thirty-second note — a note having 1/32 of the time value of a whole note; demi-semiquaver.
thirty-second rest — a rest equal in value to a thirty-second note.
thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
thrift-institution — economical management; economy; frugality.
throw oneself into — to propel or cast in any way, especially to project or propel from the hand by a sudden forward motion or straightening of the arm and wrist: to throw a ball.
to bear witness to — If a person or thing bears witness to something, they show or say that it exists or happened.
to cast aspersions — If you cast aspersions on someone or something, you suggest that they are not very good in some way.
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 scrape a living — If you say that someone scrapes a living or scratches a living, you mean that they manage to earn enough to live on, but it is very difficult. In American English, you say they scrape out a living or scratch out a living.
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.
transient response — A transient response of a circuit is a temporary change in the way that it behaves due to an external excitation, that will disappear with time.
transit theodolite — a theodolite having a telescope that can be transited.
transition element — any element in any of the series of elements with atomic numbers 21–29, 39–47, 57–79, and 89–107, that in a given inner orbital has less than a full quota of electrons.
translation agency — an organization that provide people to translate speech or writing into a different language
transmission brake — A transmission brake is a brake that operates on the transmission system of a vehicle rather than directly on the wheels.
transmission shaft — a shaft that rotates transmitting motion from the engine to the differential gear

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