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hydrogel
hydrogen
hydrogen bomb
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
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hydrogen embrittlement
hy·dro·gen em·brit·tle·ment [ hdrəjən em brítt'lmənt ]


noun 
Definition:
 
metal weakening process: a process in which a metal is weakened by the incorporation of hydrogen in or below its surface, e.g. during plating or etching
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