Nouns starting with H

• Hydrocharitaceae — Noun – English ～ simple nearly stemless freshwater aquatic plants; widely distributed
• hydrochloric acid — Noun – English ～ an aqueous solution of hydrogen chloride; a strongly corrosive acid
• hydrochloride — Noun – English ～ a complex consisting of an organic base in association with hydrogen chloride
• hydrochlorofluorocarbon — Noun – English ～ a fluorocarbon that is replacing chlorofluorocarbon as a refrigerant and propellant in aerosol cans; considered to be somewhat less destructive to the atmosphere
• hydrochlorothiazide — Noun – English ～ a diuretic drug (trade name Microzide, Esidrix, and HydroDIURIL) used in the treatment of hypertension
• Hydrochoeridae — Noun – English ～ capybara
• Hydrochoerus — Noun – English ～ a genus of Hydrochoeridae
• Hydrochoerus hydrochaeris — Noun – English ～ pig-sized tailless South American amphibious rodent with partly webbed feet; largest living rodent
• hydrocolloid — Noun – English ～ a substance that forms a gel with water
• hydrocortisone — Noun – English ～ an adrenal-cortex hormone (trade names Hydrocortone or Cortef) that is active in carbohydrate and protein metabolism
• Hydrocortone — Noun – English ～ an adrenal-cortex hormone (trade names Hydrocortone or Cortef) that is active in carbohydrate and protein metabolism
• hydrocracking — Noun – English ～ the process whereby hydrocarbon molecules of petroleum are broken down into kerosene and gasolene by the addition of hydrogen under high pressure in the presence of a catalyst
• hydrocyanic acid — Noun – English ～ a solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds
• Hydrodamalis gigas — Noun – English ～ extinct large sirenian mammal formerly found near the Asiatic coast of the Bering Sea
• Hydrodamalis — Noun – English ～ a genus of the family Dugongidae comprising only Steller's sea cow
• HydroDIURIL — Noun – English ～ a diuretic drug (trade name Microzide, Esidrix, and HydroDIURIL) used in the treatment of hypertension
• hydrodynamics — Noun – English ～ study of fluids in motion
• hydrodynamik — Noun – Danish ～ læren om bevægelse i væsker
• hydroelectricity — Noun – English ～ electricity produced by water power
• hydroflumethiazide — Noun – English ～ diuretic used to treat hypertension and edema

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