18-letter words containing m, a, c, h, i
- 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.
- processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
- projection machine — an apparatus that projects motion pictures; projector.
- propaganda machine — the group of people, publications, etc, such as of a government, country etc, responsible for the organized dissemination of information, allegations, etc, to assist or damage the cause of a government, movement, etc
- provision merchant — a person or company in the business of retailing food and other provisions
- publishing company — a firm which publishes books
- pyromucic aldehyde — furfural.
- quasi-metaphysical — pertaining to or of the nature of metaphysics.
- quick off the mark — If you are quick off the mark, you are quick to understand or respond to something. If you are slow off the mark, you are slow to understand or respond to something.
- rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
- richard p. feynman — (person, computing, architecture) /fayn'mn/ 1918-1988. A US physicist, computer scientist and author who graduated from Massachusetts Institute of Technology and Princeton. Feynmane was a key figure in helping Oppenheimer and team develop atomic bomb. In 1950 he became a professor at Caltech and in 1965 became Nobel Prize Laureate in Physics for QED (quantum electrodynamics). He was a primary figure in "solving" the Challenger disaster O-ring problem. He "rediscovered" the former Soviet Socialist Republic of Tuva. The 2001 film "Infinity" about Feynman's early life featured Matthew Broderick and Patricia Arquette. In 2001, "QED", a play about Feynman's life featuring Alan Alda opened.
- roman architecture — buildings in style of ancient Rome
- salem witch trials — 17th-century witchcraft case
- sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- status asthmaticus — a severe attack of asthma in which the patient may die from respiratory failure if not treated with inhaled oxygen or other appropriate measures
- stinking chamomile — mayweed.
- stoichiometrically — of or relating to stoichiometry.
- stokely carmichael — Hoagland Howard [hohg-luh nd] /ˈhoʊg lənd/ (Show IPA), ("Hoagy") 1899–1981, U.S. songwriter and musician.
- submarine sandwich — a sandwich made with a long cylindrical bread roll
- survival mechanism — something you or your body does automatically, in order to survive in a dangerous or unpleasant situation
- swedish gymnastics — a system of passive and active exercising of muscles and joints
- sympathetic strike — sympathy strike.
- sympathetic string — a thin wire string, as in various obsolete musical instruments, designed to vibrate sympathetically with the bowed or plucked strings to reinforce the sound.
- systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.
- teaching equipment — teaching aids
- the american dream — the notion that the American social, economic, and political system makes success possible for every individual
- the black mountain — a mountain range in S Wales, in E Carmarthenshire and W Powys. Highest peak: Carmarthen Van, 802 m (2632 ft)
- the dismal science — a name for economics coined by Thomas Carlyle
- the family compact — the ruling oligarchy in Upper Canada in the early 19th century
- thermal efficiency — the ratio of the work output of a heat engine to the heat input expressed in the same units of energy.
- thioantimonic acid — a hypothetical acid, H3SbS4, known only in the form of its salts
- to take the mickey — If you take the mickey out of someone or something, you make fun of them, usually in an unkind way.
- watchdog committee — a committee responsible for monitoring standards of behaviour
- white-collar crime — any of various crimes, as embezzlement, fraud, or stealing office equipment, committed by business or professional people while working at their occupations.
- whittaker chambers — Robert, 1802–71, Scottish publisher and editor.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.
- witch hazel family — the plant family Hamamelidaceae, characterized by trees and shrubs having alternate, simple leaves, flowers in clusters or heads, and fruit in the form of a double-beaked woody capsule, and including the sweet gum, witch alder, and witch hazel.
- world championship — an international competition in a particular sport or activity for people all around the world
- writ of attachment — a document by which a court orders the seizing of property in order to ensure satisfaction of a judgement