Melted to the body by the heat of the fire.
Outside, the air had become still, as if exhausted by the heat of the day.
He would have given half a kingdom to spend the last hour of his life by a fire's light and heat.
Remember the time we made love by the heat of a volcano?
She turned, her attention caught by the heat coming from the fireplace.
In the food industry - preservation by heat, usually under pressure.
After lunch, urged on by heat and the kids, you head for the water.
He could feel himself coming back together again, pulled into shape by the heat within and without 'Ah.
I guess that's what they mean by the "heat of battle."
Oxygen in air can do it, when encouraged by heat.