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| hy·dro·gen [ hdrəjən ] |
noun |
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| Definition: |
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reactive gaseous element: a highly reactive colorless gas, the lightest element and the most abundant in the universe. Source: water, most organic compounds. Use: industrial processes, production of ammonia, reduction of metal ores to metals.
Symbol H
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| [Late 18th century. < French hydrogène< Greek hudōr "water" + French -gène (see -gen)] |
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