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hypophosphoric acid |
Noun
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a crystalline tetrabasic acid (H4P2O6) |
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hypophosphorous acid |
Noun
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a clear or yellow monobasic acid (H3PO2) |
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hahnium |
Noun
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a transuranic element |
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hydrargyrum |
Noun
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a heavy silvery toxic univalent and bivalent metallic element |
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hafnium |
Noun
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a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals |
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hassium |
Noun
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a radioactive transuranic element |
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helium |
Noun
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a very light, colorless, and odorless element that is one of the six inert gasses |
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holmium |
Noun
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a trivalent metallic element of the rare earth group |
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hydrogen |
Noun
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a nonmetallic univalent element that is normally a colorless, odorless, and highly flammable diatomic gas |
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heavy hydrogen |
Noun
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an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen) |
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halite |
Noun
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naturally occurring crystalline sodium chloride |
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heating oil |
Noun
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a petroleum product used for fuel |
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hausmannite |
Noun
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a mineral consisting of manganese tetroxide |
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heavy spar |
Noun
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a white or colorless mineral (BaSO4) |
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hexose |
Noun
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a monosaccharide that contains six carbon atoms per molecule |
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hemimorphite |
Noun
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a white mineral |
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hard solder |
Noun
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solder that contains copper |
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haptoglobin |
Noun
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a protein in plasma that binds free hemoglobin and removes it (as from wounds) |
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hornfels |
Noun
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a fine-grained metamorphic rock formed by the action of heat on clay rocks |
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hornstone |
Noun
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a fine-grained metamorphic rock formed by the action of heat on clay rocks |
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hornblende |
Noun
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a green to black mineral of the amphibole group |
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heavy water |
Noun
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water containing a substantial proportion of deuterium atoms, used in nuclear reactors |
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hematoidin |
Noun
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an orange-yellow pigment in the bile that forms as a product of hemoglobin |
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hydrazoite |
Noun
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a salt of hydrazoic acid |
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haematoidin |
Noun
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an orange-yellow pigment in the bile that forms as a product of hemoglobin |
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human chorionic gonadotropin |
Noun
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hormone produced early in pregnancy by the placenta |
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human chorionic gonadotrophin |
Noun
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hormone produced early in pregnancy by the placenta |
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hexestrol |
Noun
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estrogen compound used to treat menstrual irregularities and menopausal symptoms and to prevent pregnancy |
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horsehide |
Noun
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leather from the hide of a horse |
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heptadecanoic acid |
Noun
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a colorless crystalline synthetic fatty acid |
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hydrocortisone |
Noun
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an adrenal-cortex hormone (trade names Hydrocortone or Cortef) that is active in carbohydrate and protein metabolism |
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hydrogen carbonate |
Noun
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a salt of carbonic acid (containing the anion HCO3) in which one hydrogen atom has been replaced |
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hudson seal |
Noun
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muskrat fur dressed to simulate sealskin |
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hydrogen peroxide |
Noun
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a viscous liquid with strong oxidizing properties |
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heliotrope |
Noun
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green chalcedony with red spots that resemble blood |
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hexanoic acid |
Noun
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a fatty acid found in animal oils and fats or made synthetically |
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hard coal |
Noun
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a hard natural coal that burns slowly and gives intense heat |
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hydraulic cement |
Noun
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a cement that hardens under water |
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hydroxybenzene |
Noun
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a toxic white soluble crystalline acidic derivative of benzene |
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hardpan |
Noun
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crust or layer of hard subsoil encrusted with calcium-carbonate occurring in arid or semiarid regions |
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holy water |
Noun
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water that has been blessed by a priest for use in symbolic purification |
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hydrated aluminum oxide |
Noun
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white crystalline compound that occurs naturally as the mineral gibbsite |
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hydrated aluminium oxide |
Noun
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white crystalline compound that occurs naturally as the mineral gibbsite |
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high explosive |
Noun
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a powerful chemical explosive that produces gas at a very high rate |
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halitosis |
Noun
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offensive breath |
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halitus |
Noun
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exhaled breath |
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hydrochloride |
Noun
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a complex consisting of an organic base in association with hydrogen chloride |
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human waste |
Noun
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the body wastes of human beings |
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hydrofluosilicic acid |
Noun
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an unstable poisonous corrosive acid known primarily in the form of its salts |
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horse manure |
Noun
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horse excreta used as fertilizer |