aerate in WordNet English dictionary

1. aerate (sewage) so as to favor the growth of organisms that decompose organic matter
   activate  aerate 
   
2. impregnate, combine, or supply with oxygen
   "oxygenate blood"
   oxygenate  oxygenize  oxygenise  aerate 
   
3. expose to fresh air
   "aerate your old sneakers"
   air out  air  aerate