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aerate verb

  /ˈɛːɹeɪt/
  • (transitive) To supply with oxygen or air.
 belüften

aeration noun

  /ɛːˈɹeɪʃ(ə)n/
  • By extension, a process in which other gases (such as carbon dioxide or nitrogen or argon) are circulated through or mixed with a substance (usually liquid), sometimes with the consequence of increasing the transfer of air into the same liquid at the surface due to the induced circulation.
 Belüftung

aerator noun

  • A device which mixes air with a substance, particularly soil or a liquid.
 Belüfter, Belüftungsanlage
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