18-letter words containing e, c, t, h, y
- acadian flycatcher — a small, greenish tyrant flycatcher (Empidonax virescens) found in deciduous forests of E North America
- according to hoyle — according to the rules and regulations; in the prescribed, fair, or correct way
- aerothermodynamics — the study of the exchange of heat between solids and gases, esp of the heating effect on aircraft flying through the air at very high speeds
- analytical machine — Analytical Engine
- anthropocentricity — the state or quality of being anthropocentric.
- as the case may be — according to the circumstances
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- bachelorette party — A bachelorette party is a party for a woman who is getting married very soon, to which only women are invited.
- benzyl thiocyanate — a colorless, crystalline, water-insoluble solid, C 8 H 7 NS, used as an insecticide.
- biological therapy — biotherapy
- breach of security — an act that violates a country, area, or building's security measures
- catastrophe theory — a mathematical theory that classifies surfaces according to their form
- catcher in the rye — a novel (1951) by J. D. Salinger.
- characteristically — Also, characteristical. pertaining to, constituting, or indicating the character or peculiar quality of a person or thing; typical; distinctive: Red and gold are the characteristic colors of autumn.
- chartered surveyor — (in Britain) a surveyor who is registered with the Royal Institution of Chartered Surveyors as having the qualifications, training, and experience to satisfy their professional requirements
- chebyshev equation — Tchebycheff equation.
- chrétien de troyes — 12th century, French poet, who wrote the five Arthurian romances Erec; Cligès; Lancelot, le chevalier de la charette; Yvain, le chevalier au lion; and Perceval, le conte del Graal (?1155–?1190), the first courtly romances
- cognitive ethology — a branch of ethology concerned with the influence of conscious awareness and intention on the behaviour of an animal
- commodity exchange — an exchange where commodities are traded
- computer telephony — Computer Telephone Integration
- 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
- cot death syndrome — the unexplained sudden death of an infant during sleep
- 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
- crested flycatcher — any of various tyrant flycatchers (esp. genus Myiarchus) with a prominent crest
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- cut one's eyeteeth — to become experienced or sophisticated
- cyclic pitch lever — a lever in a helicopter to change the angle of attack of individual rotor blades, causing the helicopter to move forwards, backwards, or sideways
- cytoarchitectonics — Cytoarchitecture.
- death by chocolate — a very rich type of chocolate dessert or cake
- death-valley curve — a curve on a graph showing how the capital of a new company plotted against time declines sharply as the venture capital is used up before income reaches predicted levels
- digital technology — the branch of scientific or engineering knowledge that deals with the creation and practical use of digital or computerized devices, methods, systems, etc.: advances in digital technology.
- dihydrotachysterol — a white, crystalline, water-insoluble sterol, C 28 H 46 O, derived from ergosterol: used chiefly in the treatment of hypoparathyroidism.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- duchenne dystrophy — the most common form of muscular dystrophy, usually affecting only boys
- dysthymic disorder — a psychiatric disorder characterized by generalized depression that lasts for at least a year
- eighty-column mind — (abuse) The sort said to be possessed by persons for whom the transition from punched card to paper tape was traumatic (nobody has dared tell them about disks yet). It is said that these people, including (according to an old joke) the founder of IBM, will be buried "face down, 9-edge first" (the 9-edge being the bottom of the card). This directive is inscribed on IBM's 1402 and 1622 card readers and is referenced in a famous bit of doggerel called "The Last Bug", the climactic lines of which are as follows: He died at the console Of hunger and thirst. Next day he was buried, Face down, 9-edge first. The eighty-column mind is thought by most hackers to dominate IBM's customer base and its thinking. See fear and loathing, card walloper.
- electrophotography — Any of several methods of photocopying in which an image is created and then transferred between surfaces using static electricity.
- elementary teacher — a teacher in an elementary school
- ethnopsychological — Relating to ethnopsychology.
- fifth monarchy men — (during the Commonwealth in the 17th century) a militant sect of Puritans who identified the fifth monarchy with the millennial reign of Christ and who believed they should help to inaugurate that reign by force.
- fly in the face of — to move through the air using wings.
- forensic chemistry — the application of facts concerning chemistry to questions of civil and criminal law.
- gestalt psychology — (sometimes lowercase) the theory or doctrine that physiological or psychological phenomena do not occur through the summation of individual elements, as reflexes or sensations, but through gestalts functioning separately or interrelatedly.
- gopher object type — A character specifying how to display a Gopher document. Current types are: 0 document 1 menu 2 CSO phone book entity 3 error 4 binhex binary 5 DOS binary (deprecated) 6 UU binary (deprecated) 7 index search 8 telnet connection 9 binary + duplicate server for previous object I image M MIME document T tn3270 based telnet connection c cal g GIF image h HTML s binary u {Usenet} newsgroup (1999-10-14)
- heteroscedasticity — (statistics) The property of a series of random variables of 'not' every variable having the same finite variance.
- heteroskedasticity — Alternative spelling of heteroscedasticity.
- historical geology — the branch of geology dealing with the history of the earth.
- honorary secretary — a unpaid person who is one of the managers of an organization
- hot-water cylinder — a vertical cylindrical tank for storing hot water, esp an insulated one made of copper used in a domestic hot-water system
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