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词汇 hydrogen
释义

hydrogen

noun
 
/ˈhaɪdrədʒən/
/ˈhaɪdrədʒən/
[uncountable]
(symbol H)
  1. a chemical element. Hydrogen is a gas that is the lightest of all the elements. It combines with oxygen to form water.氢;氢气Topics Physics and chemistryc1
    Collocations DictionaryHydrogen is used before these nouns:
    • bomb
    • fuel
    • gas
    词源late 18th cent.: coined in French from Greek hudro- ‘water’ + -genēs ‘-born, of a specified kind’, from gen- (root of gignomai ‘be born, become’, genos ‘a kind’).
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