red heat

American  

noun

1. the temperature of a red-hot body.

2. the condition of being red-hot.

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red heat British  

noun

1. the temperature at which a substance is red-hot

2. the state or condition of being red-hot

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Etymology

Origin of red heat

First recorded in 1680–90

Example Sentences

One child died of heatstroke in Italy on Monday, where temperatures of 40C are expected to hit later this week and red heat alerts were in place for 16 cities including Rome, Milan and Florence.

From BBC

Fopiano said she has to turn her truck on throughout the night to power a red heat lamp to keep them warm.

From Seattle Times

To conduct their analysis, the scientists looked at both historical observations and climate models, focusing on the regions under the red heat warning.

From The Verge

We searched the Internet for shards of information and poured over maps with tiny red heat dots that might spell out our futures.

From Salon

The bits of plastic seemingly disappear, melting into the red heat.

From The Guardian