superheat

verb

to heat to relatively high temperature

Wiktionary

noun

Etymology: Etymology tree Proto-Indo-European *úp Proto-Indo-European *-er Proto-Indo-European *upér Proto-Italic *super Latin super Latin super-lbor. English super- English heat English superheat From super- + heat.

The excess of temperature of a vapour above its temperature of saturation.
“In addition to all this, the fluidity of the steam itself was much increased by high superheat, usually achieved by means of the Houlet superheater.”

verb

To heat a liquid above its boiling point
To heat a vapour above its saturation point
To heat too much, to overheat.
“to superheat an oven”