\Su`per*heat"\, v. t.
To heat a liquid above its boiling point without converting
it into vapor.

\Su`per*heat"\, v. t. [imp. & p. p. {Superheated}; p.
pr. & vb. n. {Superheating}.]
1. To heat too much, to overheat; as, to superheat an oven.
2. (Steam Engine) To heat, as steam, apart from contact with
   water, until it resembles a perfect gas.

\Su"per*heat`\, n.
The increase of temperature communicated to steam by
superheating it.