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17-letter words containing h, i, n, y

  • dihydroergotamine — an ergot alkaloid, C 33 H 37 N 5 O 5 , used in the treatment of various types of migraine headache.
  • dihydromorphinone — a narcotic compound, C 17 H 19 O 3 N, prepared from morphine and used chiefly as an analgesic.
  • dimethylhydrazine — a flammable, highly toxic, and colorless liquid, C 2 H 8 N 2 , used as a component in jet and rocket fuels.
  • diphenylacetylene — tolan.
  • diphenylhydantoin — a white, slightly water-soluble powder, C 15 H 11 N 2 O 2 , used in the form of its sodium salt to prevent or arrest convulsions in epilepsy.
  • do your own thing — If you do your own thing, you live, act, or behave in the way you want to, without paying attention to convention or depending on other people.
  • drive-by shooting — an incident in which a person, building, or vehicle is shot at by someone in a moving vehicle
  • encephalomyelitic — Relating to encephalomyelitis.
  • encephalomyelitis — Inflammation of the brain and spinal cord, typically due to acute viral infection.
  • ethinyloestradiol — Alternative form of ethinylestradiol.
  • fee-paying school — a school which charges fees to parents of pupils
  • firehose syndrome — (networking, jargon)   An absence, failure or inadequacy of flow control mechanisms causing the sender to overwhelm the receiver. The implication is that, like trying to drink from a firehose, the consequenses are worse than just loss of data, e.g. the receiver may crash. See ping-flood.
  • fountain of youth — a fabled spring whose waters were supposed to restore health and youth, sought in the Bahamas and Florida by Ponce de León, Narváez, De Soto, and others.
  • friend of dorothy — a male homosexual
  • glastonbury chair — a folding chair having legs crossed front-to-back and having arms connected to the back and to the front seat rail.
  • glycosphingolipid — (biochemistry) a lipid that contains at least one monosaccharide unit and either a sphingoid or a ceramide.
  • go without saying — something said, especially a proverb or apothegm.
  • haematocrystallin — Alternative form of hematocrystallin.
  • haemoglobinopathy — (medicine) Any of a group of inherited disorders in which haemoglobin does not function properly.
  • hamiltonian cycle — Hamiltonian problem
  • harmonic analysis — the calculation of Fourier series and their generalization.
  • have a roving eye — to show a widespread amorous interest in the opposite sex
  • heavy mineral oil — a colorless, oily, almost tasteless, water-insoluble liquid, usually of either a standard light density (light mineral oil) or a standard heavy density (heavy mineral oil) consisting of mixtures of hydrocarbons obtained from petroleum by distillation: used chiefly as a lubricant, in the manufacture of cosmetics, and in medicine as a laxative.
  • heritage industry — an industry that manages the historical sites, buildings, and museums in a particular place, with the aim of encouraging tourism
  • heteronormativity — The view that all human beings are either male or female, both in sex and in gender, and that sexual and romantic thoughts and relations are normal only when between people of different sexes.
  • high-density disk — a computer storage disk capable of holding more than 720 kilobytes of data
  • highways engineer — a civil engineer trained and specialized in the planning, construction, maintenance, etc of highways and roads
  • 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.
  • homeland security — national defence
  • homolytic fission — the dissociation of a molecule into two neutral fragments
  • huygens principle — the principle that all points on a wave front of light are sources of secondary waves and that surfaces tangential to these waves define the position of the wave front at any point in time.
  • huygens' eyepiece — a telescope eyepiece consisting of two planoconvex lenses separated by a distance equal to half the sum of their focal lengths, which are in the ratio of three to one, and oriented so that their curved surfaces face the incident light
  • hyaline cartilage — the typical, translucent form of cartilage, containing little fibrous tissue.
  • 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
  • hydroxytryptamine — (organic compound) Any hydroxy derivative of tryptamine, but especially 5-hydroxytryptamine (serotonin).
  • hyper-intelligent — having good understanding or a high mental capacity; quick to comprehend, as persons or animals: an intelligent student.
  • 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.
  • hyperintellectual — appealing to or engaging the intellect: intellectual pursuits.
  • hyperpigmentation — coloration, especially of the skin.
  • hyperpolarisation — Alternative spelling of hyperpolarization.
  • hyperpolarization — The act or process of hyperpolarizing.
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