to supply air to (the lungs)
to cause fresh air to circulate through (a room, etc)
said of a current of air: to pass or circulate through (a room, etc) so as to freshen it
to expose (something, e.g. stored grain) to air, esp a current of fresh air, to purify, cure, or refresh it
archaic to increase the oxygen content of (blood)
to examine or discuss (a matter) freely and openly
ventilation noun
ventilable -ləbl/
adjventilative /-laytiv/ adj
[late Latin ventilatus, past part. of ventilare to fan, winnow, from ventulus, dimin. of ventus wind]