Superheat \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.
[1913 Webster]
2. (Steam Engine) To heat, as steam, apart from contact with
water, until it resembles a perfect gas.
[1913 Webster]
3. To heat (a liquid) above its boiling point without
converting it into vapor.
[Webster 1913 Suppl.]