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EnglishEdit

EtymologyEdit

So named by Dr. Joseph Black in 1756 because it can be absorbed, or fixed, by strong bases.

NounEdit

fixed air (uncountable)

  1. (chemistry, now historical) Carbon dioxide.
    • 1997, Roy Porter, The Greatest Benefit to Mankind, Folio Society 2016, p. 246:
      Lavoisier then elucidated the exchange of gases in the lungs: the air inhaled was converted into Black's fixed air, whereas the nitrogen (‘azote’) remained unchanged.

ReferencesEdit