white heat

noun

1. a stage of intense activity, excitement, feeling, etc..

   The sales campaign is at white heat.

2. an intense heat at which a substance glows with white light.

white heat

noun

1. intense heat or a very high temperature, characterized by emission of white light

2. informal,  a state of intense excitement or activity

Word History and Origins

Origin of white heat¹

First recorded in 1700–10