SUPERHEAT

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