From Longman Dictionary of Contemporary Englishwhite heatˌwhite ˈheat noun [uncountable] TIHOTthe very high temperature at which a metal turns white → white-hot
Examples from the Corpus
white heat• I imagined it all dissolving in a white heat, or swept away in an enormous wind.• The sun coaxed her body to stretch idly as a cat; she tanned easily, adored white heat and turquoise sea.• There are white lies and white heat. 