superheat verb & noun. [su:pǝ'hi:t, sju:-] M19.
[from SUPER- 3 + HEAT noun, verb.]
A. verb trans. Heat to a very high temperature; esp. raise the normal temperature of (steam); more widely, heat (a substance) above the temperature of a phase transition without the change of phase occurring. M19.
b. noun. The state of being superheated; the excess of temperature of a vapour above its temperature of saturation. L19.

■ superheater noun an apparatus for superheating steam M19.

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