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hydrogen bond
hydrogen bromide
hydrogen carbonate
hydrogen chloride
hydrogen cyanide
hydrogen embrittlement
hydrogen fluoride
hydrogen iodide
hydrogen ion
hydrogen peroxide
hydrogen sulfate
hydrogen sulfide
hydrogen sulfite
hydrogen tartrate
hydrogenase
hydrogenate
hydrogenize
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hydrofining
hy·dro·fin·ing [ hdrō fning ]


noun 
Definition:
 
process for purifying petroleum: a process by which petroleum products are stabilized and their sulfur content reduced by being treated with gaseous hydrogen in the presence of a catalyst
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