noun / verb
heat
HEET/hiːt/
Intense warmth produced by a high temperature.
The heat from the steaming bowl warms the hands above it.

Etymology
Old English hætu already meant warmth or the quality of being hot. Heat and hot share an origin: one names the condition, the other describes it.
In context
heat stress for sows and that's an interesting just an interesting idea that you're trying to keep the piglets uh warm and dry
More examples
- The summer heat keeps us indoors during the afternoon.
- We heat the soup slowly on the stove.
- The pan heats up quickly on this burner.
Forms
heat · heats · heated · heating
heater noun — A device used to produce heat.