WordWeb Online

1. The process of becoming warmer; a rising temperature
   - warming
    
2. Utility to warm a building
   "the heating system wasn't working"; "they have radiant heating"; "the heating plant wasn't working";
   - heating system, heating plant, heat

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

Derived forms: heatings

Type of: alter, arouse, change, change state, elicit, enkindle [literary], evoke, fire, furnish, kindle, modify, offer, provide, provoke, raise, render, supply, temperature change, turn, utility

Antonym: cool down

Part of: building, edifice

Encyclopedia: Heating, ventilation, and air conditioning