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16-letter words containing r, o, i, d

  • hexahydroaniline — cyclohexylamine.
  • high court judge — a judge who sits in the High Court
  • higher education — education beyond high school, specifically that provided by colleges and graduate schools, and professional schools.
  • hit one's stride — to walk with long steps, as with vigor, haste, impatience, or arrogance.
  • hold a brief for — to argue for; champion
  • holder condition — Lipschitz condition.
  • homme d'affaires — a businessman.
  • honeymoon bridge — any of several varieties of bridge for two players.
  • honeymoon period — a period of popularity enjoyed by a new government, or a new occupant of a post
  • hookworm disease — any of certain bloodsucking nematode worms, as Ancylostoma duodenale and Necator americanus, parasitic in the intestine of humans and other animals.
  • hopfield network — (artificial intelligence)   (Or "Hopfield model") A kind of neural network investigated by John Hopfield in the early 1980s. The Hopfield network has no special input or output neurons (see McCulloch-Pitts), but all are both input and output, and all are connected to all others in both directions (with equal weights in the two directions). Input is applied simultaneously to all neurons which then output to each other and the process continues until a stable state is reached, which represents the network output.
  • horizon distance — Television. the distance of the farthest point on the earth's surface visible from a transmitting antenna.
  • horseback riding — activity: riding a horse
  • horseradish tree — a tropical tree, Moringa pterygosperma, having fragrant white flowers and seeds yielding a commercially useful oil.
  • hot cold-working — metalworking at considerable heat but below the temperature at which the metal recrystallizes: a form of cold-working.
  • hummingbird moth — hawk moth.
  • hyaloid membrane — the delicate, pellucid, and nearly structureless membrane enclosing the vitreous humor of the eye.
  • hydnocarpic acid — an acid, C 16 H 28 O 2 , obtained from chaulmoogra oil, and used in the treatment of leprosy.
  • hydration number — the number of molecules of water with which an ion can combine in an aqueous solution of given concentration.
  • hydrobromic acid — a colorless or faintly yellow corrosive liquid, HBr, an aqueous solution of hydrogen bromide.
  • hydrocyanic acid — a colorless, highly poisonous liquid, HCN, an aqueous solution of hydrogen cyanide.
  • hydroelectricity — pertaining to the generation and distribution of electricity derived from the energy of falling water or any other hydraulic source.
  • hydroferricyanic — (chemistry) Pertaining to, or containing, or obtained from, hydrogen, ferric iron, and cyanogen.
  • hydroformylation — the addition of a hydrogen atom and the formyl group to a double bond of a hydrocarbon by reaction with a mixture of carbon monoxide and hydrogen in the presence of a catalyst.
  • hydrogen bromide — a colorless gas, HBr, having a pungent odor: the anhydride of hydrobromic acid.
  • hydrogen cyanide — a colorless poisonous gas, HCN, having a bitter almondlike odor: in aqueous solution it forms hydrocyanic acid.
  • hydrogen sulfide — a colorless, flammable, water-soluble, cumulatively poisonous gas, H 2 S, having the odor of rotten eggs: used chiefly in the manufacture of chemicals, in metallurgy, and as a reagent in laboratory analysis.
  • hydrologic cycle — the natural sequence through which water passes into the atmosphere as water vapor, precipitates to earth in liquid or solid form, and ultimately returns to the atmosphere through evaporation.
  • hydrostatic head — The hydrostatic head is the vertical height of a column of fluid.
  • hydroxylammonium — (inorganic compound) The univalent NH3OH+ cation, derived from hydroxylamine.
  • hyperandrogenism — (medicine) An abnormally high production of androgens.
  • hyperchlorhydria — excessive secretion of hydrochloric acid in the stomach.
  • hyperlipoidaemia — Alt form hyperlipoidemia.
  • hyponitrous acid — an unstable, crystalline acid, H 2 N 2 O 2 .
  • icositetrahedron — a solid figure having 24 faces.
  • immunodepressant — preventing or diminishing the immune response
  • immunomodulatory — (medical) Having the ability to alter or regulate immune functions.
  • immunosuppressed — the inhibition of the normal immune response because of disease, the administration of drugs, or surgery.
  • in a brown study — in a reverie or daydream
  • in so many words — a unit of language, consisting of one or more spoken sounds or their written representation, that functions as a principal carrier of meaning. Words are composed of one or more morphemes and are either the smallest units susceptible of independent use or consist of two or three such units combined under certain linking conditions, as with the loss of primary accent that distinguishes black·bird· from black· bird·. Words are usually separated by spaces in writing, and are distinguished phonologically, as by accent, in many languages.
  • in working order — fully functioning
  • inauguration day — the day on which the president of the United States is inaugurated, being January 20 of every year following a year whose number is divisible by four. Prior to the Twentieth Amendment to the Constitution (ratified February 6, 1933), it was March 4.
  • inboard-outboard — Also, outdrive, stern-drive. (of a motorboat) having an inboard engine connected to a maneuverable outboard drive-shaft unit.
  • incorporated bar — (in some states) a system of bar associations to which all lawyers are required to belong.
  • incorrespondence — Lack of correspondence; failure to correspond or match up; disagreement; disproportion.
  • indian breadroot — breadroot.
  • indian liquorice — a woody leguminous climbing plant, Abrus precatorius, native to tropical Asia and naturalized elsewhere, having scarlet black-spotted poisonous seeds, used as beads, and roots used as a substitute for liquorice
  • indian territory — a former territory of the U.S.: now in E Oklahoma. About 31,000 sq. mi. (80,000 sq. km).
  • indiscrimination — an act or instance of not discriminating.
  • indo-europeanist — a linguist specializing in the study, especially the comparative study, of the Indo-European languages.
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