18-letter words containing p, o, r

symphony orchestra — a large orchestra composed of wind, string, and percussion instruments and organized to perform symphonic compositions.
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).
systems programmer — a person whose job is to program systems software
take the wraps off — to reveal
telephone receiver — a device, as in a telephone, that converts changes in an electric current into sound.
temporal summation — the act or process of summing.
temporary hardness — hardness of water due to the presence of magnesium and calcium hydrogencarbonates, which can be precipitated as carbonates by boiling
territory of papua — a former territory of Australia, consisting of SE New Guinea and adjacent islands: now part of Papua New Guinea
the better part of — a large part of
the lords temporal — (in Britain) peers other than bishops in their capacity as members of the House of Lords
the operative word — If you describe a word as the operative word, you want to draw attention to it because you think it is important or exactly true in a particular situation.
the powers that be — You can refer to people in authority as the powers that be, especially when you want to say that you disagree with them or do not understand what they say or do.
the-cocktail-party — a play in verse (1950) by T. S. Eliot.
thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
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.
three-body problem — the problem of calculating the motions of three bodies in space moving under the influence of only their mutual gravitational attraction.
tip of the iceberg — a large floating mass of ice, detached from a glacier and carried out to sea.
to all appearances — apparently
to cast aspersions — If you cast aspersions on someone or something, you suggest that they are not very good in some way.
to get a bad press — If someone or something gets a bad press, they are criticized, especially in the newspapers, on television, or on radio. If they get a good press, they are praised.
to hold your peace — If you hold or keep your peace, you do not speak, even though there is something you want or ought to say.
to learn the ropes — If you are learning the ropes, you are learning how a particular task or job is done.
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 play favourites — to display favouritism
to plough a furrow — If you say that someone ploughs a particular furrow or ploughs their own furrow, you mean that their activities or interests are different or isolated from those of other people.
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 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.
to spill your guts — if someone spills their guts, they tell you everything about something secret or private
to sweep the board — If someone sweeps the board in a competition or election, they win nearly everything that it is possible to win.
to watch your step — If someone tells you to watch your step, they are warning you to be careful about how you behave or what you say so that you do not get into trouble.
torsion-free group — a group in which every element other than the identity has infinite order.
traditional option — an option that once purchased cannot be resold
traditional policy — a life assurance policy in which the policyholder's premiums are paid into a general fund and his or her investment benefits are calculated according to actuarial formulae
traditional weapon — a weapon having ceremonial tribal significance, such as an assegai or knobkerrie
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.
transporter bridge — a bridge for carrying passengers and vehicles by means of a platform suspended from a trolley.
transverse process — a process that projects from the sides of a vertebra.
triphosphoric acid — the hypothetical acid H 5 P 3 O 10 , known chiefly by its salts.
turn up one's nose — to behave disdainfully towards (something)
turn up one's toes — to die
two-colour process — (in early colour photography) a method of printing which uses superimposed red and green images
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.
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.
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.
universal coupling — a coupling between rotating shafts set at an angle to one another, allowing for rotation in three planes.
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 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).

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