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17-letter words containing n, o, r

  • holding operation — a plan or procedure devised to prolong the existing situation
  • hole in the heart — a defect of the heart in which there is an abnormal opening in any of the walls dividing the four heart chambers
  • hollerith, herman — Herman Hollerith
  • holy roman empire — a Germanic empire located chiefly in central Europe that began with the coronation of Charlemagne as Roman emperor in a.d. 800 (or, according to some historians, with the coronation of Otto the Great, king of Germany, in a.d. 962) and ended with the renunciation of the Roman imperial title by Francis II in 1806, and was regarded theoretically as the continuation of the Western Empire and as the temporal form of a universal dominion whose spiritual head was the pope.
  • home improvements — improvements to one's home, such as new kitchens and bathrooms, central heating etc
  • homeland security — national defence
  • homo floresiensis — a possible species of very small, primitive human: its fossils were discovered on the Indonesian island of Flores in 2003.
  • honorable mention — a citation conferred on a contestant, exhibit, etc., having exceptional merit though not winning a top honor or prize.
  • horatio kitchener — Horatio Herbert (1st Earl Kitchener of Khartoum and of Broome) 1850–1916, English field marshal and statesman.
  • hormone treatment — any of several medical treatments using hormones
  • hornblende schist — a variety of schist containing needles of hornblende that lie in parallel planes.
  • horst wessel song — the official song of the Nazi party in Germany from 1933 to 1945.
  • hospital gangrene — Pathology. a contagious, often fatal gangrene, especially involving amputation stumps and war wounds, occurring usually in crowded, ill-kept hospitals, and caused by putrefactive bacteria.
  • hot-and-sour soup — a spicy Chinese soup made with pork, chicken, beans, vinegar, etc., served hot
  • hottentot's bread — elephant's-foot.
  • housekeeping cart — A housekeeping cart is a large metal basket on wheels which is used by a cleaner in a hotel to move clean bed linen, towels, and cleaning equipment.
  • hungarian goulash — goulash (def 1).
  • hurler's syndrome — a medical condition characterized by physical deformity and mental deficiency
  • hydrofluorocarbon — Any of a class of partly chlorinated and fluorinated hydrocarbons, used as an alternative to chlorofluorocarbons in foam production, refrigeration, and other processes.
  • hydrogasification — a high-temperature, high-pressure process for producing liquid or gaseous fuels from fine particles of coal and hydrogen gas
  • hydrogen chloride — a colorless gas, HCl, having a pungent odor: the anhydride of hydrochloric acid.
  • hydrogen fluoride — a colorless corrosive gas, HF, the anhydride of hydrofluoric acid, used chiefly as a catalyst and in the fluorination of hydrocarbons.
  • hydrogen peroxide — a colorless, unstable, oily liquid, H 2 O 2 , an aqueous solution of which is used chiefly as an antiseptic and a bleaching agent.
  • hydrogen sulphide — Chemistry
  • hydrothermal vent — an opening on the floor of the sea from which hot, mineral-rich solutions issue. Compare vent1 (def 2).
  • hydroxytryptamine — (organic compound) Any hydroxy derivative of tryptamine, but especially 5-hydroxytryptamine (serotonin).
  • hyperalimentation — overfeeding.
  • hyperbolic cosine — one of a group of functions of an angle expressed as a relationship between the distances of a point on a hyperbola to the origin and to the coordinate axes; cosh
  • hyperbolic secant — a hyperbolic function that is the reciprocal of cosh; sech
  • hyperchlorination — Chemistry. to combine or treat with chlorine. to introduce chlorine atoms into an organic compound by an addition or substitution reaction.
  • hyperconnectivity — Hyperconnectivity is the use of many systems and devices so that you are always connected to social networks and other sources of information.
  • hyperinflationary — (economics) Having very high levels of inflation.
  • hyperpigmentation — coloration, especially of the skin.
  • hyperpolarisation — Alternative spelling of hyperpolarization.
  • hyperpolarization — The act or process of hyperpolarizing.
  • hypochondriacally — In a hypochondriacal manner.
  • hypodermic needle — a hollow needle used to inject solutions subcutaneously.
  • hypoglossal nerve — either one of the twelfth pair of cranial nerves, consisting of motor fibers that innervate the muscles of the tongue.
  • hypophrygian mode — a plagal church mode represented on the white keys of a keyboard instrument by an ascending scale from B to B, with the final on E.
  • hysteron proteron — a figure of speech in which the logical order of two elements in discourse is reversed, as in “bred and born” for “born and bred.”.
  • i beg your pardon — You say 'Pardon?' or 'I beg your pardon?' or, in American English, 'Pardon me?' when you want someone to repeat what they have just said because you have not heard or understood it.
  • ichthyosarcotoxin — a term applied to any poison found in the flesh of poisonous fishes.
  • icosidodecahedron — A semiregular polyhedron with twelve faces that are regular pentagons and twenty that are equilateral triangles.
  • icositetrahedrons — Plural form of icositetrahedron.
  • idiosyncratically — pertaining to the nature of idiosyncrasy, or something peculiar to an individual: The best minds are idiosyncratic and unpredictable as they follow the course of scientific discovery.
  • ignoratio elenchi — the fallacy of offering proof irrelevant to the proposition in question.
  • illinois waterway — a waterway system in N Illinois made up of canals and rivers connecting Lake Michigan in Chicago with the Mississippi River. 336 miles (541 km) long.
  • illocutionary act — an act performed by a speaker by virtue of uttering certain words, as for example the acts of promising or of threatening
  • image recognition — (graphics, artificial intelligence)   The identification of objects in an image. This process would probably start with image processing techniques such as noise removal, followed by (low-level) feature extraction to locate lines, regions and possibly areas with certain textures. The clever bit is to interpret collections of these shapes as single objects, e.g. cars on a road, boxes on a conveyor belt or cancerous cells on a microscope slide. One reason this is an AI problem is that an object can appear very different when viewed from different angles or under different lighting. Another problem is deciding what features belong to what object and which are background or shadows etc. The human visual system performs these tasks mostly unconsciously but a computer requires skillful programming and lots of processing power to approach human performance.
  • immediate version — child version
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