aeration

nouns

the process of exposing to air (so as to purify)
"the aeration of the soil"
aeration
is derived from
aerate
is a type of (narrower)
a process existing in or produced by nature (rather than by the intent of human beings)
"the action of natural forces"; "volcanic activity"
action, activity, natural action, natural process
the act of charging a liquid with a gas making it effervescent
aeration
is derived from
aerate
is a type of (narrower)
the act of changing something into something different in essential characteristics
change of state