Noun
1. a form of energy that is transferred by a difference in temperature
2. the presence of heat
3. the sensation caused by heat energy
4. intense passion or emotion
5. applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
6. a preliminary race in which the winner advances to a more important race
7. utility to warm a building;
"the heating system wasn't working""they have radiant heating"