definition of
[aerate]

[1] #1 aerate v. [air out, air] expose to fresh air; "aerate your old sneakers". wn

[2] #2 aerate v. [activate] aerate (sewage) so as to favor the growth of organisms that decompose organic matter. wn

[3] #3 aerate v. [oxygenate, oxygenize, oxygenise] impregnate, combine, or supply with oxygen; "oxygenate blood". wn