- a stage of intense activity, excitement, feeling, etc.: The sales campaign is at white heat.
- an intense heat at which a substance glows with white light.
Origin of white heat
First recorded in 1700–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for white heat
It was the quiet of tense nerves and imagination at white-heat.Prester John
For if Tom was quickly brought to a white-heat, radiation was equally rapid.The Graysons
The noon meal is rushed through, perhaps when the brain is at white-heat.How to Get Strong and How to Stay So
Though the words were mild, the feelings of the two men were at white-heat.Mistress Nell
George C. Hazelton, Jr.
The enthusiasm of the people for the Repeal of the Union was then at white-heat.Eighty Years And More; Reminiscences 1815-1897
Elizabeth Cady Stanton
- intense heat or a very high temperature, characterized by emission of white light
- informal a state of intense excitement or activity
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012