elevation noun [C/U]. âº âheight above the âsurface of the âearth, or an âarea that is âhigher than the âsurrounding âland: [C] At âhigher elevations, the âair is âcolder. (Definition of elevation from the Cambridge Academic Content Dictionary Â© Cambridge University Press).
A dissolved gas is, simply enough, gas that has been dissolved into another material. This creates a solution, a mixture, where the gas is the solute, the minor component, and the other material, generally a liquid, is the solvent, the main component.
A gas is a substance which. ( 1 a) at 50 Â°C (122 Â°F) has a vapor pressure greater than 300 kPa or. ( 2 b) is completely gaseous at 20 Â°C (68 Â°F) at a standard pressure of 101.3 kPa. 3  Gases assigned to one of three divisions.  division 2.1 Flammable 1  gas. division 2.2 Non flammable, Non-toxic 2  gas. division 2.3 Toxic  gas.