Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To heat excessively; overheat.
  • transitive v. To heat (steam or other vapor not in contact with its own liquid) beyond its saturation point at a given pressure.
  • transitive v. To heat (a liquid) above its boiling point without causing vaporization.
  • n. The amount by which a vapor is superheated.
  • n. The heat imparted during the process of superheating.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. To heat a liquid above its boiling point
  • v. To heat a vapour above its saturation point

from the GNU version of the Collaborative International Dictionary of English

  • n. The increase of temperature communicated to steam by superheating it.
  • transitive v. To heat too much, to overheat.
  • transitive v. To heat, as steam, apart from contact with water, until it resembles a perfect gas.
  • transitive v. To heat (a liquid) above its boiling point without converting it into vapor.

from The Century Dictionary and Cyclopedia

  • To heat to an extreme degree or to a very high temperature; specifically, to heat, as steam, apart from contact with water, until it resembles a perfect gas.
  • n. Excess of temperature of a vapor above the temperature at which it is saturated.

Etymologies

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  • "1 a : to heat (a liquid) above the boiling point without converting into vapor b : to heat (a vapor not in contact with its own liquid) so as to cause to remain free from suspended liquid droplets ." --Merriam-Webster Unabridged

    April 14, 2009