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18-letter words containing g, h, e, t

  • deadweight tonnage — the capacity in long tons of cargo, passengers, fuel, stores, etc. (deadweight tons) of a vessel: the difference between the loaded and light displacement tonnage of the vessel.
  • demorgan's theorem — (logic)   A logical theorem which states that the complement of a conjunction is the disjunction of the complements or vice versa. In symbols: not (x and y) = (not x) or (not y) not (x or y) = (not x) and (not y) E.g. if it is not the case that I am tall and thin then I am either short or fat (or both). The theorem can be extended to combinations of more than two terms in the obvious way. The same laws also apply to sets, replacing logical complement with set complement, conjunction ("and") with set intersection, and disjunction ("or") with set union. A (C) programmer might use this to re-write if (!foo && !bar) ... as if (!(foo || bar)) ... thus saving one operator application (though an optimising compiler should do the same, leaving the programmer free to use whichever form seemed clearest).
  • dendrochronologist — One who carries out dendrochronology.
  • dermot macmurrough — ?1110–71, king of Leinster, who, by enlisting the support of the English to win back his kingdom, was responsible for the English conquest of Ireland
  • desktop publishing — Desktop publishing is the production of printed materials such as newspapers and magazines using a desktop computer and a laser printer, rather than using conventional printing methods. The abbreviation DTP is also used.
  • determinate growth — growth of a plant stem that is terminated early by the formation of a bud
  • dielectric heating — the heating of a nonconducting substance caused by dielectric loss when the material is placed in a variable electric field.
  • digital humanities — (used with a singular verb) the study of literature, philosophy, etc., as facilitated by computer technology or digital media: Digital humanities uses data analysis to find patterns in large bodies of text. the set of methodologies used in such scholarship.
  • digital switchover — the process of changing the method of transmitting television from analogue to digital format
  • 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.
  • 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.
  • dispensing chemist — a shop where drugs and medicines are sold or given out
  • divergent thinking — thinking in an unusual and unstereotyped way, e.g. to generate several possible solutions to a problem
  • do not give a hoot — If you say that you don't give a hoot or don't care two hoots about something, you are emphasizing that you do not care at all about it.
  • do one's own thing — a material object without life or consciousness; an inanimate object.
  • down to the ground — thoroughly; completely
  • drinking chocolate — sweetened cocoa powder
  • drug on the market — Pharmacology. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well-being.
  • duty-free shopping — the making of duty-free purchases
  • 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.
  • eighty-twenty rule — (programming)   The program-design version of the law of diminishing returns. The 80/20 rule says that roughly 80% of the problem can be solved with 20% of the effort that it would take to solve the whole problem. For example, parsing e-mail addresses in "From:" lines in e-mail messages is notoriously difficult if you follow the RFC 2822 specification. However, about 60% of actual "From:" lines are in the format "From: Their Name <[email protected]>", with a far more constrained idea of what can be in "user" or "host" than in RFC 2822. Another 25% just add double-quotes around "Their Name". Matching just those two patterns would thus cover 85% of "From:" lines, with a tiny portion of the code required to fully implement RFC2822. (Adding support for "From: [email protected]" and "From: [email protected] (Their Name) " brings coverage to almost 100%, leaving only really baroque things that RFC-2822 permits, like "From: Pete(A wonderful \) chap)
  • electric discharge — electricity emitted
  • electrocardiograph — A machine used for electrocardiography.
  • electrophotography — Any of several methods of photocopying in which an image is created and then transferred between surfaces using static electricity.
  • ethnomethodologist — A person engaged in ethnomethodology.
  • ethnomusicological — Relating to or pertaining to ethnomusicology.
  • ethnopsychological — Relating to ethnopsychology.
  • euclid's algorithm — (algorithm)   (Or "Euclidean Algorithm") An algorithm for finding the greatest common divisor (GCD) of two numbers. It relies on the identity gcd(a, b) = gcd(a-b, b) To find the GCD of two numbers by this algorithm, repeatedly replace the larger by subtracting the smaller from it until the two numbers are equal. E.g. 132, 168 -> 132, 36 -> 96, 36 -> 60, 36 -> 24, 36 -> 24, 12 -> 12, 12 so the GCD of 132 and 168 is 12. This algorithm requires only subtraction and comparison operations but can take a number of steps proportional to the difference between the initial numbers (e.g. gcd(1, 1001) will take 1000 steps).
  • exhaustive testing — (programming)   Executing a program with all possible combinations of inputs or values for program variables.
  • exhibition killing — the murder of a hostage by terrorists, filmed for broadcasting on television or the internet
  • fall to the ground — (of a plan, theory, etc) to be rendered invalid, esp because of lack of necessary information
  • farm the long acre — to graze cows on the verge of a road
  • fehling's solution — a blue solution of copper sulfate, Rochelle salt, and sodium hydroxide, used to test for the presence of a sugar, aldehyde, etc.
  • fight to the death — If you say that you will fight to the death for something, you are emphasizing that you will do anything to achieve or protect it, even if you suffer as a consequence.
  • fishing expedition — a legal proceeding mainly for the purpose of interrogating an adversary, or of examining his or her property and documents, in order to gain useful information.
  • flash butt welding — a method of welding metal edge-to-edge with a powerful electric flash followed by the application of pressure.
  • for the time being — the system of those sequential relations that any event has to any other, as past, present, or future; indefinite and continuous duration regarded as that in which events succeed one another.
  • forethoughtfulness — The condition of being forethoughtful.
  • fracture toughness — The fracture toughness of a material is how likely it is to resist fracture.
  • from the ground up — the solid surface of the earth; firm or dry land: to fall to the ground.
  • gas-discharge tube — any tube in which an electric discharge takes place through a gas
  • general anesthesia — induced unconsciousness
  • genetic algorithms — genetic algorithm
  • 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.
  • get it in the neck — the part of the body of an animal or human being that connects the head and the trunk.
  • get off the ground — project: start well
  • get one's irish up — of, relating to, or characteristic of Ireland, its inhabitants, or their language.
  • get out of the way — move aside
  • get the upper hand — gain advantage
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