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hydrochloride
hydrochlorofluorocarbon
hydrochlorothiazide
hydrocolloid
hydrocolloid strip
hydrocoral
hydrocortisone
hydrocracking
hydrocyanic acid
hydrodynamic
hydrodynamics
hydroelectric
hydrofining
hydrofluoric acid
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hydrogasification
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hydrogen cyanide
hy·dro·gen cy·a·nide


noun 
Definition:
 
very poisonous gas: an extremely poisonous colorless liquid or gas with a characteristic smell of almonds. Source: reaction between an acid and a metal cyanide. HCN
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