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The Collaborative International Dictionary of English v.0.48 (gcide)

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.]


Superheated \Su"per*heat`ed\
heated to a temperature above the boiling point at the
ambient pressure; -- said of liquids. In such an unstable
condition, a small disturbance of the liquid can cause a
rapid and sometimes violent ebullition of vapor.
[PJC]

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