'Gaseous' definitions:

Definition of 'gaseous'

From: WordNet
adjective
Existing as or having characteristics of a gas; "steam is water is the gaseous state" [ant: liquid, solid]

Definition of 'Gaseous'

From: GCIDE
  • Gaseous \Gas"e*ous\ (? or ?; 277), a. [From Gas. Cf. F. gazeux.]
  • 1. In the form, or of the nature, of gas, or of an a["e]riform fluid. [1913 Webster]
  • 2. Lacking substance or solidity; tenuous. "Unconnected, gaseous information." --Sir J. Stephen. [1913 Webster]