Oxford Advanced American Dictionary

Definition of heating noun from the Oxford Advanced Learner's Dictionary

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heating

noun
heating pronunciation English ˈhiːtɪŋ heating pronunciation American ˈhiːtɪŋ
[uncountable] (especially British English) (also heat especially in North American English)
 
the process of supplying heat to a room or building; a system used to do this
Who turned the heating off?What type of heating do you have?a gas heating systemheating bills see also central heating