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19-letter words containing a, e, r, o

  • hepatic portal vein — a vein connecting two capillary networks in the liver
  • hepatoportal system — a vascular arrangement in vertebrates through which blood is transported into the liver from capillaries of the stomach, spleen, duodenum, pancreas, and intestines.
  • heptachlorobiphenyl — (organic compound) Either of twenty-four isomers of the polychlorinated biphenyl containing seven chlorine atoms.
  • hermitian conjugate — adjoint (def 2).
  • hexafluoroplatinate — (chemistry) The univalent anion PtF6- prepared by reacting platinum hexafluoride with certain metals or other elements.
  • hildegard of bingen — Hildegard von (Hildegard of Bingen"Sibyl of the Rhine") 1098–1178, German nun, healer, writer, and composer.
  • historic episcopate — the derivation of the episcopate of a Church in historic succession from the apostles
  • honorable discharge — a discharge from military service of a person who has fulfilled obligations efficiently, honorably, and faithfully.
  • horizontal encoding — (processor)   An instruction set where each field (a bit or group of bits) in an instruction word controls some functional unit or gate directly, as opposed to vertical encoding where instruction fields are decoded (by hard-wired logic or microcode) to produce the control signals. Horizontal encoding allows all possible combinations of control signals (and therefore operations) to be expressed as instructions whereas vertical encoding uses a shorter instruction word but can only encode those combinations of operations built into the decoding logic. An instruction set may use a mixture of horizontal and vertical encoding within each instruction. Because an architecture using horizontal encoding typically requires more instruction word bits it is sometimes known as a very long instruction word (VLIW) architecture.
  • horsehair toadstool — a small basidiomycetous fungus, Marasmius androsaceus, having a rusty coloured cap and very slender black stems. It is related to the fairy ring mushroom, but is commonly found among conifers and heather
  • horseshoe whipsnake — a long slender fast-moving nonvenomous snake, Coluber hippocrepis, of Eurasia
  • household insurance — an arrangement in which you pay money to a company, and they pay money to you if your household goods are stolen or damaged
  • human rights record — the facts that are known about the tendency of a country, regime, etc, to observe and protect human rights
  • huntington's chorea — a hereditary disease of the central nervous system characterized by brain deterioration and loss of control over voluntary movements, the symptoms usually appearing in the fourth decade of life.
  • hydrochlorothiazide — a crystalline, water-insoluble powder, C 7 H 8 ClN 3 O 4 S 2 , used as a diuretic and in the treatment of hypertension.
  • hydropneumatization — utilization of air pressure in the housing of a water turbine to keep the level of water that has been used from rising to interfere with the rotor blades.
  • 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
  • hydroxybenzoic acid — Hydroxybenzoic acid is the active ingredient in a number of drugs, for example, aspirin. Hydroxybenzoic acid is also used as a preservative.
  • hyper-nationalistic — a person devoted to nationalism.
  • hyperbolic cosecant — a hyperbolic function that is the reciprocal of hyperbolic sine
  • hypercholesteraemia — (medicine) An abnormally high level of cholesterol in the blood.
  • hyperfocal distance — the distance, at a given f number, between a camera lens and the nearest point (hyperfocal point) having satisfactory definition when focused at infinity.
  • hyperparathyroidism — overactivity of the parathyroid gland, characterized by softening of the bones, with consequent pain, tenderness, and a tendency to spontaneous fractures, and by muscular weakness and abdominal cramps.
  • hyperphosphorylated — Simple past tense and past participle of hyperphosphorylate.
  • hypocholesterolemia — an abnormally low amount of cholesterol in the blood.
  • hypolipoproteinemia — An abnormally low level of lipoprotein in the blood.
  • hysterosalpingogram — An X-ray image taken during hysterosalpingography.
  • idea of pure reason — any of the three undemonstrable entities (a personal soul, a cosmos, and a supreme being) implicit in the fact of a subject and an object of knowledge, and in the need for some principle uniting them.
  • identification card — a card giving identifying data about a person, as full name, address, age, and color of hair and eyes, and often containing a photograph: for use as identification at a place of employment, school, club, etc.
  • identification mark — barcode or serial number
  • immigration officer — official administrating incoming foreigners
  • immunoprecipitation — the separation of an antigen from a solution by the formation of a large complex with its specific antibody.
  • impressionistically — In an impressionistic manner.
  • in commemoration of — in remembrance of
  • in consideration of — the act of considering; careful thought; meditation; deliberation: I will give your project full consideration.
  • in the tradition of — If you say that something or someone is in the tradition of a person or thing from the past, you mean that they have many features that remind you of that person or thing.
  • incommensurableness — (rare) Incommensurability.
  • incomplete abortion — a miscarriage in which some fetal or placental tissue remains in the uterus.
  • incomplete fracture — a fracture extending partly across the bone.
  • incremental plotter — a device that plots graphs on paper from computer-generated instructions
  • indeterminate vowel — schwa.
  • index expurgatorius — a list of books now included in the Index Librorum Prohibitorum, forbidden to be read except from expurgated editions.
  • index of refraction — a number indicating the speed of light in a given medium as either the ratio of the speed of light in a vacuum to that in the given medium (absolute index of refraction) or the ratio of the speed of light in a specified medium to that in the given medium (relative index of refraction) Symbol: n.
  • induction hardening — a process in which the outer surface of a metal component is rapidly heated by means of induced eddy currents. After rapid cooling the resulting phase transformations produce a hard wear-resistant skin
  • informal settlement — a squatter camp
  • information algebra — Theoretical formalism for DP, never resulted in a language. Language Structure Group of CODASYL, ca. 1962. Sammet 1969, 709.
  • information content — the amount of information in something
  • information officer — someone whose job is to give information to people
  • information science — the study of the nature, collection, and management of information and of its uses, especially involving computer storage and retrievals.
  • information service — a service which provides information
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