18-letter words containing s, p, e, c, h, r
- apocryphal gospels — accounts of Christ's life that are not recognized as part of the New Testament
- arm's-length price — a price of a transaction agreed in accordance with market values, disregarding any connection such as common ownership of the companies involved
- aspherical surface — a lens or mirror surface that does not form part of a sphere and is used to reduce aberrations
- athletic supporter — jockstrap
- atmospheric engine — an early form of single-acting engine in which the power stroke is provided by atmospheric pressure acting upon a piston in an exhausted cylinder.
- atmospheric window — wavelengths of the electromagnetic spectrum that can be transmitted through the earth's atmosphere. Atmospheric windows occur in the visible, infrared, and radio regions of the spectrum
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- australopithecines — Plural form of australopithecine.
- benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
- bichromate process — any of several methods of photography in which the light-sensitive medium is alkaline bichromate associated with a colloid such as gum, albumen, or gelatin.
- cassiopeia's chair — the five brightest stars in the constellation Cassiopeia that seem to form the shape of a W or M
- catastrophe theory — a mathematical theory that classifies surfaces according to their form
- cathode dark space — Crookes dark space.
- chagos archipelago — group of islands in the Indian Ocean 1,180 mi (1,899 km) northeast of Mauritius, comprising the British Indian Ocean Territory: chief island, Diego Garcia
- character graphics — ASCII art
- christine de pisan — ?1364–?1430, French poet and prose writer, born in Venice. Her works include ballads, rondeaux, lays, and a biography of Charles V of France
- christopher sholes — Christopher Latham [ley-thuh m,, -th uh m] /ˈleɪ θəm,, -ðəm/ (Show IPA), 1819–90, U.S. inventor of the typewriter.
- citizenship papers — the document stating that a naturalized person has been formally declared a citizen
- closed scholarship — a scholarship for which only certain people, such as those from a particular school or with a particular surname, are eligible
- come to grips with — If you come to grips with a problem, you consider it seriously, and start taking action to deal with it.
- comparison shopper — an employee of a retail store hired to visit competing stores in order to gather information regarding styles, quality, prices, etc., of merchandise offered by competitors.
- comprehensibleness — The quality of being comprehensible; comprehensibility.
- connected subgraph — (mathematics) A connected graph consisting of a subset of the nodes and edges of some other graph.
- cordless telephone — a portable battery-powered telephone with a short-range radio link to a fixed base unit
- cornucopian thesis — the belief that, as long as science and technology continue to advance, growth can continue for ever because these new advances create new resources
- corpuscular theory — the theory, originally proposed by Newton, and revived with the development of the quantum theory, that light consists of a stream of particles
- counter-hypothesis — a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.
- cranial osteopathy — osteopathy that focuses on the cranium and the spine
- creatine phosphate — phosphocreatine.
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- depth-first search — (algorithm) A graph search algorithm which extends the current path as far as possible before backtracking to the last choice point and trying the next alternative path. Depth-first search may fail to find a solution if it enters a cycle in the graph. This can be avoided if we never extend a path to a node which it already contains. Opposite of breadth first search. See also iterative deepening.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- discharge printing — a fabric-printing method in which the material is dyed and then certain areas are discharged so as to permit the original hue or its color replacement to act as a pattern against the colored ground.
- duchenne dystrophy — the most common form of muscular dystrophy, usually affecting only boys
- eggshell porcelain — a type of very thin translucent porcelain originally made in China
- give sb the creeps — If someone or something gives you the creeps, they make you feel very nervous or frightened.
- helicopter gunship — military attack helicopter
- helicopter station — a place where helicopters are kept in readiness for use
- hemicorporectomies — Plural form of hemicorporectomy.
- hippocratic facies — the sallow facial expression, with listless staring eyes, often regarded as denoting approaching death
- historical present — the present tense used in narrating a past event as if happening at the time of narration.
- homeowner's policy — a form of home insurance that provides compensation for damage, loss, or injury of property, personal belongings, or persons due to fire, theft, accidents, etc.
- hotel receptionist — a person who looks after guests when they first arrive at a hotel, checking them in, giving them their keys, etc
- hypercholesteremia — Alternative spelling of hypercholesteraemia.
- hypermodern school — a style of chess characterized by control of the centre from the flanks
- hypernationalistic — a person devoted to nationalism.
- hypodermic syringe — a small glass piston or barrel syringe having a detachable, hollow needle for use in injecting solutions subcutaneously.
- hypogastric artery — iliac artery (def 3).
- hypophysis cerebri — the master endocrine gland, attached by a stalk to the base of the brain.
- in the first place — firstly
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