Answer: superheat

AnswerCrossword Clue
superheatto heat to an extreme degree or to a very high temperature
superheatthe amount of superheating
superheatto heat (a liquid) above its boiling point without the formation of bubbles of vapor
superheatthe state of being superheated
superheatto heat (a gas, as steam not in contact with water) to such a degree that its temperature may be lowered or its pressure increased without the conversion of any of the gas into liquid
superheatthe state of being superheated / to heat to excess