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 al·de·hyde /ˈældəˌhaɪd/
 乙醛

 al·de·hyde /ˈældəˌhaɪd/ 名詞

 Al·de·hyde n.
 1. Chem. A colorless, mobile, and very volatile liquid obtained from alcohol by certain processes of oxidation.
 Note: ☞ The aldehydes are intermediate between the alcohols and acids, and differ from the alcohols in having two less hydrogen atoms in the molecule, as common aldehyde (called also acetaldehyde, acetic aldehyde or ethyl aldehyde), C2H4O; methyl aldehyde (called also formaldehyde), CH2O.
 Aldehyde ammonia Chem., a compound formed by the union of aldehyde with ammonia.
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 aldehyde
      n : any of a class of highly reactive chemical compounds; used
          in making resins and dyes and organic acids