English
heating
From heat + -ing.
A compound of heat + -ing
Proto-Indo-European *keHy- ‘heat’
Proto-Germanic *haitį̄
Proto-West Germanic *haitī
Old English hǣtu
Middle English hete ‘heat’
English heat
Today it means
noun A system that raises the temperature of a room or building. Compare heater.
Language periods are conventional ranges, not dates for this word.
Etymograph / heating