Ah, I was using the "engineering" meaning. In engineering, "superheated steam" is steam heated beyond its boiling point at a given pressure. https://en.m.wikip

Ah, I was using the "engineering" meaning. In engineering, "superheated steam" is steam heated beyond its boiling point at a given pressure. https://en.m.wikipedia.org/wiki/Superheated_steam https://en.m.wikipedia.org/wiki/Superheated_steam https://www.spiraxsarco.com/learn-about-steam/steam-engineering-principles-and-heat-transfer/superheated-steam https://www.spiraxsarco.com/learn-about-steam/steam-engineer... In a steam boiler, the boiling and superheating are often done in different locations: the water is first evaporated in one section, then the resulting "saturated steam" (i.e. at vapor-liquid equilibrium) then passes through a hotter section, often called a superheater, which heats it further beyond the boiling point. Superheated steam is better for turbines than saturated steam.