18-letter words containing d, u, c, h
- mercurous chloride — calomel.
- modular arithmetic — arithmetic in which numbers that are congruent modulo a given number are treated as the same. Compare congruence (def 2), modulo, modulus (def 2b).
- moulding technique — the technique used to shape a material into a frame or mould
- mucopolysaccharide — (formerly) glycosaminoglycan.
- multimedia machine — machines that allow users to control and manipulate sound, video, text and graphics
- muscular dystrophy — a hereditary disease characterized by gradual wasting of the muscles with replacement by scar tissue and fat, sometimes also affecting the heart.
- natural childbirth — childbirth involving little or no use of drugs or anesthesia and usually involving a program in which the mother is psychologically and physically prepared for the birth process.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- old curiosity shop — a novel (1840–41) by Dickens.
- orthopedic surgery — corrective operation on bones or joints
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- pennsylvania dutch — the descendants of 17th- and 18th-century settlers in Pennsylvania from southwest Germany and Switzerland.
- physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
- pitch-and-run shot — chip shot.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- process scheduling — multitasking
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
- puvis de chavannes — Puvis de [py-vee duh] /püˈvi də/ (Show IPA), Puvis de Chavannes, Pierre.
- pyromucic aldehyde — furfural.
- pyrosulphuric acid — a fuming liquid acid made by adding sulphur trioxide to concentrated sulphuric acid. Formula: H2S2O7
- repayment schedule — a document detailing the specific terms of a borrower's loan, such as monthly payment, interest rate, due dates etc
- scottish deerhound — one of a Scottish breed of large, tall hunting dogs having a medium-length, wiry, gray or reddish-fawn coat, originally developed for hunting and bringing down deer, and known as the royal dog of Scotland.
- shipping documents — documents relating to the sending of a shipment of goods, for example containing details of contents, weight, value etc.
- 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.
- standard schnauzer — schnauzer.
- study hall teacher — a teacher who supervises or helps students during a period of time or lesson used for studying
- submarine sandwich — a sandwich made with a long cylindrical bread roll
- sulfuric anhydride — sulfur trioxide.
- theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
- 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
- to come unstitched — to go wrong or awry
- 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.
- turk's-head cactus — a cactus, Melocactus communis, of Jamaica, having needlelike spines and a cylindrical body with a tawny-red, fezlike terminal part bearing red flowers.
- under the jackboot — If a country or group of people is under the jackboot, they are suffering because the government is cruel and undemocratic.
- 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.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.