ˈga]sēəs, ˈgaa], ]sh(y)əs, Brit often ˈgāziəs or ˈgāsi-\ adjective
Etymology: gas (I) + -eous
1.
a. : having the form of or being gas
gaseous matter
: of or relating to gases
gaseous laws
gaseous content
b. : superheated
use of gaseous steam in industrial boilers
2. : lacking substance or solidity : tenuous
unconnected, gaseous information — J.F.Stephen