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19-letter words containing r, a, b, e, l

  • hamiltonian problem — (computability)   (Or "Hamilton's problem") A problem in graph theory posed by William Hamilton: given a graph, is there a path through the graph which visits each vertex precisely once (a "Hamiltonian path")? Is there a Hamiltonian path which ends up where it started (a "Hamiltonian cycle" or "Hamiltonian tour")? Hamilton's problem is NP-complete. It has numerous applications, sometimes completely unexpected, in computing.
  • handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
  • have a problem with — to be unable to understand or do
  • heptachlorobiphenyl — (organic compound) Either of twenty-four isomers of the polychlorinated biphenyl containing seven chlorine atoms.
  • hildegard of bingen — Hildegard von (Hildegard of Bingen"Sibyl of the Rhine") 1098–1178, German nun, healer, writer, and composer.
  • honorable discharge — a discharge from military service of a person who has fulfilled obligations efficiently, honorably, and faithfully.
  • hydrostatic balance — a balance for finding the weight of an object submerged in water in order to determine the upthrust on it and thus determine its relative density
  • hyperbolic cosecant — a hyperbolic function that is the reciprocal of hyperbolic sine
  • incommensurableness — (rare) Incommensurability.
  • incomplete abortion — a miscarriage in which some fetal or placental tissue remains in the uterus.
  • information algebra — Theoretical formalism for DP, never resulted in a language. Language Structure Group of CODASYL, ca. 1962. Sammet 1969, 709.
  • installed user base — user base
  • intangible property — intellectual property, rights ownership
  • interchangeableness — Quality of being interchangeable.
  • internal-combustion — of or relating to an internal-combustion engine.
  • intervertebral disc — any of the cartilaginous discs between individual vertebrae, acting as shock absorbers
  • intervertebral disk — the plate of fibrocartilage between the bodies of adjacent vertebrae.
  • isobutyl propionate — a colorless liquid, C 7 H 14 O 2 , used chiefly as a paint, varnish, and lacquer solvent.
  • jumping bristletail — any of several thysanuran insects that live in dark, warm, moist places, as under leaves, bark, and dead tree trunks and along rocky seacoasts, and are active jumpers, making erratic leaps when disturbed.
  • kellogg-briand pact — a treaty renouncing war as an instrument of national policy and urging peaceful means for the settlement of international disputes, originally signed in 1928 by 15 nations, later joined by 49 others.
  • lady baltimore cake — a white layer cake using only the beaten whites of eggs and spread with a fruitnut filling consisting of raisins, figs, walnuts or pecans, and sometimes candied cherries.
  • language laboratory — a special room or rooms with sound-recording and -reproducing equipment for use by students to practice speaking foreign languages, usually with an instructor monitoring the program.
  • lean over backwards — to make a special effort, esp in order to please
  • learning disability — a disorder, as dyslexia, usually affecting school-age children of normal or above-normal intelligence, characterized by difficulty in understanding or using spoken or written language, and thought to be related to impairment or slowed development of perceptual motor skills.
  • liability insurance — insurance covering the insured against losses arising from injury or damage to another person or property.
  • liberation theology — a 20th-century Christian theology, emphasizing the Biblical and doctrinal theme of liberation from oppression, whether racial, sexual, economic, or political.
  • library of congress — one of the major library collections in the world, located in Washington, D.C., and functioning in some ways as the national library of the U.S. although not officially designated as such: established by Congress in 1800 for service to its members, but now also serving government agencies, other libraries, and the public.
  • load-bearing printf — (programming, humour)   The kind of bug present in a program which works correctly when producing debug output but fails when the debugging is turned off. The expression combines load-bearing wall and printf as used in debugging by printf.
  • lobster-tail helmet — a burgonet fitted with a long, articulated tail of lames for protecting the nape of the neck, worn by cavalry in the 17th century.
  • logical unit number — (storage)   (LUN) A 3-bit identifier used on a SCSI bus to distinguish between up to eight devices (logical units) with the same SCSI ID.
  • lord baltimore cake — a yellow layer cake, using only the yolks of eggs and having a fruit-nut filling consisting of pecans, almonds, maraschino cherries, and macaroon crumbs.
  • malleable cast iron — white cast iron that has been malleablized.
  • mary mcleod bethune — Mary McLeod [muh-kloud] /məˈklaʊd/ (Show IPA), 1875–1955, U.S. educator and civil-rights leader.
  • mercurial barometer — mercury barometer.
  • molecular biologist — a specialist in the study of biological phenomena at the molecular level
  • mordvinian republic — a constituent republic of W central Russia, in the middle Volga basin. Capital: Saransk. Pop: 888 700 (2002). Area: 26 200 sq km (10 110 sq miles)
  • naberezhniye chelny — city in E European Russia, on the Kama River: pop. 514,000
  • negation by failure — An extralogical feature of Prolog and other logic programming languages in which failure of unification is treated as establishing the negation of a relation. For example, if Ronald Reagan is not in our database and we asked if he was an American, Prolog would answer "no".
  • neville chamberlain — (Arthur) Neville, 1869–1940, British statesman: prime minister 1937–40.
  • non-transferability — to convey or remove from one place, person, etc., to another: He transferred the package from one hand to the other.
  • observation balloon — a balloon that is used for gathering information and reconnaissance purposes and spotting aircraft
  • olive-backed thrush — Swainson's thrush.
  • on the baker's list — in good health
  • optical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
  • oxyacetylene burner — a blowpipe for cutting or welding metals at high temperatures
  • palomar observatory — an astronomical observatory situated on Palomar Mountain in S California, having a 200-inch (508-cm) reflecting telescope and a 48-inch (122-cm) Schmidt telescope.
  • paradichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
  • parliament building — structure housing legislative offices
  • patrol torpedo boat — PT boat.
  • perfoliate bellwort — a slender plant, Uvularia perfoliata, of the lily family, of eastern North America, having pale yellow, bell-shaped flowers.
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