18-letter words containing o, r, t, h, s, a

temporary hardness — hardness of water due to the presence of magnesium and calcium hydrogencarbonates, which can be precipitated as carbonates by boiling
the bird has flown — the person in question has fled or escaped
the coast is clear — If you say that the coast is clear, you mean that there is nobody around to see you or catch you.
the first sea lord — the senior of the two serving naval officers who sits on the admiralty board of the Ministry of Defence
the lords temporal — (in Britain) peers other than bishops in their capacity as members of the House of Lords
the mosque of omar — the mosque in Jerusalem, Israel, built in 691 ad by caliph 'Abd al-Malik: the third most holy place of Islam; stands on the Temple Mount alongside the al-Aqsa mosque
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 same old story — the familiar or regular course of events
the sun also rises — a novel (1926) by Ernest Hemingway.
the worse for wear — If you say that someone is the worse for wear, you mean that they are tired, ill, or in a bad state because they have been very active, been through a difficult experience, or been drinking alcohol.
thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
thiosulphuric acid — an unstable acid known only in solutions and in the form of its salts. Formula: H2S2O3
thorfinn karlsefni — 980–after 1007, Icelandic navigator, explorer, and leader of early colonizing expedition to Vinland, in North America.
to be caught short — If you are caught short or are taken short, you feel a sudden strong need to urinate, especially when you cannot easily find a toilet.
to be said for sth — If you say there is a lot to be said for something, you mean you think it has a lot of good qualities or aspects.
to clear the decks — If you clear the decks, you get ready to start something new by finishing any work that has to be done or getting rid of any problems that are in the way.
to cut the mustard — If someone does not cut the mustard, their work or their performance is not as good as it should be or as good as it is expected to be.
to learn the ropes — If you are learning the ropes, you are learning how a particular task or job is done.
to raise the alarm — If you raise the alarm or sound the alarm, you warn people of danger.
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.
transit theodolite — a theodolite having a telescope that can be transited.
transmission shaft — a shaft that rotates transmitting motion from the engine to the differential gear
triphosphoric acid — the hypothetical acid H 5 P 3 O 10 , known chiefly by its salts.
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.
two-chamber system — the system of having two parliamentary chambers, as the House of Lords and the House of Commons in the United Kingdom
under one's breath — the air inhaled and exhaled in respiration.
under the aegis of — guided or protected by
ur of the chaldees — the city where Abraham was born, sometimes identified with the Sumerian city of Ur. Gen. 11:28, 31; 15:7; Neh. 9:7.
urban homesteading — homesteading (def 2).
warehouse capacity — the amount of storage space in a warehouse
weather forecaster — meteorologist
west-northwestward — moving, bearing, facing, or situated toward the west-northwest.
west-southwestward — moving, bearing, facing, or situated toward the west-southwest.
westinghouse brake — a railroad air brake operated by compressed air.
withdrawal symptom — effects of stopping a drug

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