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17-letter words containing r, e, o, i

  • 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
  • homework exercise — an exercise that is set as homework
  • 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.
  • hornblende schist — a variety of schist containing needles of hornblende that lie in parallel planes.
  • horseradish sauce — a piquant sauce made from horseradish root, vinegar, etc, and traditionally eaten in Britain with roast beef
  • 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.
  • hotel limo driver — A hotel limo driver is the person whose job it is to drive the hotel limo.
  • household rubbish — the unwanted things and waste material produced in the running of a household, such as used paper, empty tins and bottles, and waste food
  • 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.
  • hybrid fiber coax — (networking)   (HFC) A kind of physical connection used in networks for audio, video, and data. DVB (Digital Video Broadcast) is used in Europe and DOCSIS is used in N America.
  • hydroelectrically — Using hydroelectric power.
  • 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
  • hydrotherapeutics — hydrotherapy.
  • 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
  • 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.
  • 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.
  • hypocholesteremia — an abnormally low amount of cholesterol in the blood.
  • hypodermic needle — a hollow needle used to inject solutions subcutaneously.
  • 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.
  • 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.
  • ice-cream parlour — a place where people go to eat ice cream
  • icosidodecahedron — A semiregular polyhedron with twelve faces that are regular pentagons and twenty that are equilateral triangles.
  • icositetrahedrons — Plural form of icositetrahedron.
  • ideogrammatically — In terms of, or by means of, ideograms.
  • ignoratio elenchi — the fallacy of offering proof irrelevant to the proposition in question.
  • illegal procedure — a penalty assessed against the offensive team for a technical rules violation, as in assuming an illegal formation.
  • 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.
  • 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
  • immigrant workers — people who work in a country they arrived to in order to settle there
  • immunocompromised — having an impaired or compromised immune response; immunodeficient.
  • immunofluorescent — Of, pertaining to, or using immunofluorescence.
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