18-letter words containing c, o, a, t, d

restoration comedy — English comedy of the period of the Restoration, stressing manners and social satire.
rhondda cynon taff — a county borough in S Wales, created from part of Mid Glamorgan in 1996. Pop: 231 600 (2003 est). Area: 558 sq km (215 sq miles)
rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
sao caetano do sul — a city in SE Brazil, SE of São Paulo.
science dictionary — a specialized dictionary covering terms in the life, earth, and physical sciences, such as the online Science Dictionary on Dictionary.com. A science dictionary includes many technical terms with precise, specialized meanings—terms not normally found in general dictionaries—making it an invaluable resource for students and professionals in scientific fields.
scissors-and-paste — designating or of a piece of writing that has been assembled from a variety of sources rather than by original research, often in a hasty or uninspired way
scratch one's head — If you say that someone is scratching their head, you mean that they are thinking hard and trying to solve a problem or puzzle.
search-and-destroy — designed to find and destroy by bombing etc
second commandment — “Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth. Thou shalt not bow down thyself to them nor serve them”: second of the Ten Commandments.
second triumvirate — the coalition and joint rule of the Roman Empire by Antony, Lepidus, and Octavian, begun in 43 bc
secondary industry — manufacturing, services, etc.
self-contradiction — an act or instance of contradicting oneself or itself.
self-contradictory — an act or instance of contradicting oneself or itself.
sex discrimination — the practice of treating male and female people unequally
sign of the zodiac — one of the twelve constellations along the path of the ecliptic.
skin friction drag — aerodynamic resistance or drag due to the contact of moving air with the surface of an airplane, a glider, etc.
sodium bicarbonate — a white, crystalline, water-soluble solid, in powder or granules, NaHCO 3 , usually prepared by the reaction of soda ash with carbon dioxide or obtained from the intermediate product of the Solvay process by purification: used chiefly in the manufacture of sodium salts, baking powder, and beverages, as a laboratory reagent, as a fire extinguisher, and in medicine as an antacid.
sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
sound spectrograph — an electronic device for recording a sound spectogram.
spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)
st. andrew's cross — a low evergreen shrub, Ascyrum hypericoides, native to temperate and subtropical America, having flowers in clusters of three: often cultivated.
stand confessed as — to be revealed or admitted as
standing committee — a permanent committee, as of a legislature, society, etc., intended to consider all matters pertaining to a designated subject.
stomach sweetbread — sweetbread (def 1).
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
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.
tender loving care — considerate and kindly care, as of someone who is ill, upset, etc
tertiary education — education, following secondary education at a school, at a college or university
the back of beyond — a very remote place
the dark continent — a term for Africa when it was relatively unexplored
the-dark-continent — Africa: so called, especially during the 19th century, because little was known about it.
theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
thioantimonic acid — a hypothetical acid, H3SbS4, known only in the form of its salts
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
three-cornered hat — a triangular shaped hat which was popular in the 17th and 18th centuries; its turned up brim formed a gutter for catching rain
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 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 pick and choose — If you pick and choose, you carefully choose only things that you really want and reject the others.
townsend avalanche — avalanche (def 3).
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
transcendental ego — (in Kantian epistemology) that part of the self that is the subject and never the object.
triphosphoric acid — the hypothetical acid H 5 P 3 O 10 , known chiefly by its salts.
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 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.
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.

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