Live steam is steam which has done no work.
Dry steam is saturated steam without any admixture of mechanically suspended water.
High-pressure steam is commonly understood to be steam used in high-pressure engines.
Low-pressure steam is that used at low pressure in condensing engines, heating apparatus, etc., at 15 lbs. to the inch or under.
Saturated steam is that in contact with water at the same temperature; saturated steam is always at its condensing point, which is always the boiling point of the water, with which it is in contact; in this it differs from superheated steam.
Superheated steam, also called steam-gas, is steam dried with heat applied after it has left the boiler.
Total heat of steam is the same as steam heat.
Wet steam, steam holding water mechanically suspended, the water being in the form of spray.
Specific gravity of steam is .625 as compared to air under the same pressure.