18-letter words containing c, h, e, d, i, t
- pennsylvania dutch — the descendants of 17th- and 18th-century settlers in Pennsylvania from southwest Germany and Switzerland.
- photodecomposition — the breaking down of molecules by radiant energy.
- phthalic anhydride — a white, crystalline, slightly water-soluble solid, C 8 H 4 O 3 , used chiefly in the manufacture of dyes, alkyd resins, and plasticizers.
- physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
- positively charged — having a positive charge
- 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.
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
- red-light district — an area or district in a city in which many houses of prostitution are located.
- registered charity — official aid organization
- residential school — (in Canada) a boarding school maintained by the Canadian government for Indian and Inuit children from sparsely populated settlements
- 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.
- sign of the zodiac — one of the twelve constellations along the path of the ecliptic.
- sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
- sonic depth finder — a sonar instrument that uses echolocation to measure depths under water.
- 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
- swedish gymnastics — a system of passive and active exercising of muscles and joints
- synthetic division — a simplified procedure for dividing a polynomial by a linear polynomial.
- the american dream — the notion that the American social, economic, and political system makes success possible for every individual
- the dark continent — a term for Africa when it was relatively unexplored
- the dismal science — a name for economics coined by Thomas Carlyle
- the encyclopedists — the writers of the French Encyclopedia (1751-72) edited by Diderot and d'Alembert, which contained the advanced ideas of the period
- 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.
- 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.
- threatened species — a species likely, in the near future, to become an endangered species within all or much of its range.
- to come unstitched — to go wrong or awry
- to pick and choose — If you pick and choose, you carefully choose only things that you really want and reject the others.
- vectorcardiography — a method of determining the direction and magnitude of the electrical forces of the heart.
- watchdog committee — a committee responsible for monitoring standards of behaviour
- white-faced hornet — any large, stinging paper wasp of the family Vespidae, as Vespa crabro (giant hornet) introduced into the U.S. from Europe, or Vespula maculata (bald-faced hornet or white-faced hornet) of North America.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.