Definitions for outgasˈaʊtˌgæs, ˌaʊtˈgæs
Random House Webster's College Dictionary
out•gasˈaʊtˌgæs, ˌaʊtˈgæs(v.)-gassed, -gas•sing.
(v.t.)to remove (adsorbed or occluded gases), usu. by heat or reduced pressure.
(v.i.)to lose gas.
Origin of outgas:
To release gaseous substances into the air, especially of a polymer material as it is aged or heated.
Origin: From out + gas.