gaseous

adjective3

1. •
   Relating to, or existing as gas (matter in an intermediate state between liquid and plasma).

   • At room temperature, oxygen remains in a gaseous state.
   • The mixture produced a gaseous vapor when heated.
2. •
   Lacking substance or solidity; tenuous.

   • Her gaseous explanations left everyone confused.
3. •
   Of a liquid containing bubbles: gassy.