WordWeb Online

1. Expose to fresh air
   "aerate your old sneakers";
   - air out, air
    
2. Aerate (sewage) so as to favour the growth of organisms that decompose organic matter
   - activate
    
3. Impregnate, combine, or supply with oxygen
   "aerate blood";
   - oxygenate, oxygenize, oxygenise [Brit]

Derived forms: aerated, aerates, aerating

Type of: alter, change, expose, modify, process, treat

Encyclopedia: Aerate