aeration

Noun
  1. The process of exposing to air (so as to purify) (synset 113449332)
    "the aeration of the soil"
    is a type of: action, activity, natural action, natural process - a process existing in or produced by nature (rather than by the intent of human beings)
  2. The act of charging a liquid with a gas making it effervescent (synset 100201093)
    is a type of: change of state - the act of changing something into something different in essential characteristics

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