Definition of Heat

Noun: heat heet

A form of energy that is transferred by a difference in temperature
- heat energy
The presence of heat
- hotness, high temperature
The sensation caused by heat energy
- warmth
The trait of being intensely emotional
- warmth, passion
Applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
- estrus [N. Amer], oestrus [Brit], rut
A preliminary race in which the winner advances to a more important race
Utility to warm a building
"the heat wasn't working";
- heating system, heating plant, heating

Verb: heat heet

Make hot or hotter
"the sun heats the oceans"; "heat the water on the stove"; "the sun heats up the oceans";
- heat up
Provide with heat
"heat the house"
Arouse or excite feelings and passions
"The refugees' fate heated compassion around the world";
- inflame, stir up, wake, ignite, fire up
Gain heat or get hot
"The room heated up quickly";
- hot up [Brit], heat up