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17-letter words containing a, l, e, o, c, h

  • genetic algorithm — (GA) An evolutionary algorithm which generates each individual from some encoded form known as a "chromosome" or "genome". Chromosomes are combined or mutated to breed new individuals. "Crossover", the kind of recombination of chromosomes found in sexual reproduction in nature, is often also used in GAs. Here, an offspring's chromosome is created by joining segments choosen alternately from each of two parents' chromosomes which are of fixed length. GAs are useful for multidimensional optimisation problems in which the chromosome can encode the values for the different variables being optimised.
  • geographical mile — nautical mile.
  • gestatorial chair — a ceremonial chair on which the pope is carried
  • go for the collar — to go without a hit in a game
  • go like hot cakes — to be sold very quickly or in large quantities
  • good-time charlie — an affable, sociable, pleasure-loving man.
  • grandfather clock — a pendulum floor clock having a case as tall as or taller than a person; tall-case clock; long-case clock.
  • grandmother clock — a pendulum clock similar to a grandfather's clock but shorter.
  • haematocrystallin — Alternative form of hematocrystallin.
  • half-round chisel — a cold chisel with a semicircular cutting edge used for making narrow channels
  • hall of residence — Halls of residence are buildings with rooms or flats, usually built by universities or colleges, in which students live during the term.
  • hamiltonian cycle — Hamiltonian problem
  • hard rock geology — (loosely) of or relating to igneous or metamorphic rocks, as in mining (hard-rock mining) and geology (hard-rock geology)
  • harmonic interval — an intervening period of time: an interval of 50 years.
  • health care proxy — a legal document in which a person can appoint someone to make decisions about medical treatment in the event that he or she is no longer mentally competent or able to communicate.
  • helicopter parent — a style of child rearing in which an overprotective mother or father discourages a child's independence by being too involved in the child's life: In typical helicopter parenting, a mother or father swoops in at any sign of challenge or discomfort.
  • henry cabot lodgeHenry Cabot, 1850–1924, U.S. public servant and author: senator 1893–1924.
  • heterochlamydeous — (of a plant) having a perianth consisting of distinct sepals and petals
  • high-carbon steel — steel containing between 0.5 and 1.5 per cent carbon
  • histamine blocker — any of various substances that act at a specific receptor site to block certain actions of histamine.
  • historical method — the process of establishing general facts and principles through attention to chronology and to the evolution or historical course of what is being studied.
  • hold all the aces — If you say that someone holds all the aces, you mean that they have all the advantages in a contest or situation.
  • hollandaise sauce — a sauce of egg yolks, butter, lemon juice, and seasonings.
  • homeland security — national defence
  • household cavalry — (in Britain) cavalry units forming part of the ceremonial guard of the monarch.
  • hubble's constant — the ratio of the recessional velocity of galaxies to their distance from the sun, with current measurements of its value ranging from 50 to 100 km/sec per megaparsec.
  • hydroelectrically — Using hydroelectric power.
  • hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
  • hyperbolic spiral — rθ = a, (where a is a constant)
  • hyperchlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
  • hypocholesteremia — an abnormally low amount of cholesterol in the blood.
  • ignoratio elenchi — the fallacy of offering proof irrelevant to the proposition in question.
  • integrated school — (in New Zealand) a private or church school that has joined the state school system
  • iontophoretically — By means of iontophoresis.
  • joachim du bellay — Joachim [French zhaw-a-keem] /French ʒɔ aˈkim/ (Show IPA), Bellay, Joachim du.
  • john of lancasterDuke of Bedford, 1389–1435, Bedford, John of Lancaster, Duke of.
  • lexicographically — the writing, editing, or compiling of dictionaries.
  • lithium carbonate — a colorless crystalline compound, Li 2 CO 3 , slightly soluble in water: used in ceramic and porcelain glazes, pharmaceuticals, and luminescent paints.
  • local anaesthesia — the use of anaesthetics that affect a particular area of the body
  • local anaesthetic — sth injected to numb a body part for pain relief
  • lose the exchange — to lose a rook in return for a bishop or knight
  • lower paleolithic — See under Paleolithic.
  • machado y morales — Gerardo [he-rahr-th aw] /hɛˈrɑr ðɔ/ (Show IPA), 1871–1939, president of Cuba 1925–33.
  • maintained school — a school financially supported by the state
  • malay archipelago — an extensive island group in the Indian and Pacific oceans, SE of Asia, including the Greater and Lesser Sunda Islands, the Moluccas, and the Philippines.
  • manchester school — a school of economists in England in the first half of the 19th century, devoted to free trade and the repeal of the Corn Law, led by Richard Cobden and John Bright.
  • mechanoelectrical — Describing the production of electricity by mechanical motion; especially in a transducer.
  • medicochirurgical — pertaining to medicine and surgery.
  • meech lake accord — the agreement reached in 1987 at Meech Lake, Quebec, at a Canadian federal-provincial conference that accepted Quebec's conditions for signing the Constitution Act of 1982. The Accord lapsed when the legislatures of two provinces, Newfoundland and Quebec, failed to ratify it by the deadline of June 23, 1990
  • memetic algorithm — (algorithm)   A genetic algorithm or evolutionary algorithm which includes a non-genetic local search to improve genotypes. The term comes from the Richard Dawkin's term "meme". One big difference between memes and genes is that memes are processed and possibly improved by the people that hold them - something that cannot happen to genes. It is this advantage that the memetic algorithm has over simple genetic or evolutionary algorithms. These algorithms are useful in solving complex problems, such as the "Travelling Salesman Problem," which involves finding the shortest path through a large number of nodes, or in creating artificial life to test evolutionary theories. Memetic algorithms are one kind of metaheuristic. (07 July 1997)
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