GNU Collaborative International Dictionary of English

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1.       
   Aërate , v. t. [imp. & p. p. Aërated ; p. pr. & vb. n. Aërating .] [Cf. F. aérer. See Air, v. t.]
   To combine or charge with gas; usually with carbonic acid gas, formerly called fixed air.
   1913 Webster
   His sparkling sallies bubbled up as from aërated natural fountains.
   Carlyle.
   
   1913 Webster
   To supply or impregnate with common air; as, to aërate soil; to aërate water.
   1913 Webster
   (Physiol.) To expose to the chemical action of air; to oxygenate (the blood) by respiration; to arterialize.
   1913 Webster
   cause a change by passing air through (of sewage)
   Syn. -- activate
   WordNet 1.5
   Aërated bread, bread raised by charging dough with carbonic acid gas, instead of generating the gas in the dough by fermentation.
   1913 Webster