A system that raises the temperature of a room or building. Compare heater. / The act of making something hot.

present participle of heat

Causing heat.

plural of heating

Alternative form of in heat

plural of heat (countable senses)

Third-person singular simple present indicative form of heat

(plural noun, dated) A period of hot weather.

(transitive) To cause an increase in temperature of (an object or space); to cause to become hot (often with "up"). / (intransitive) To become hotter.

(uncountable) Thermal energy. / (uncountable) The condition or quality of being hot. / (uncountable) An attribute of a spice that causes a burning sensation in the mouth.