Pronunciation: (gas'ē-us, gash'us), [key]
1. existing in the state of a gas; not solid or liquid.
2. pertaining to or having the characteristics of gas.
3. Informal.lacking firmness or solidity; uncertain; not definite.
4. gassy (defs. 1, 3).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.