I. ˌsü-pər-ˈhēt transitive verb
Date: 1859
1. : to heat (a vapor not in contact with its own liquid) so as to cause to remain free from suspended liquid droplets
superheat ed steam
2. : to heat (a liquid) above the boiling point without converting into vapor
• su·per·heat·er noun
II. ˈsü-pər-ˌhēt, ˌsü-pər-ˈ noun
Date: 1884
: the extra heat imparted to a vapor in superheating it from a dry and saturated condition ; also : the corresponding rise of temperature