Added 9 October 2026
heat
/ˈhiːt/ noun
In Latin: calor Wiktionary
noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about heat at Wordnik → Where our words come from →
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Thermal energy.
This furnace puts out 5000 BTUs of heat. That engine is really throwing off some heat. Removal of heat from the liquid caused it to turn into a solid.
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Heating system; a system that raises the temperature of a room or building.
I'm freezing; could you turn on the heat?
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The output of a heating system.
During the power outage we had no heat because the controls are electric. Older folks like more heat than the young.
verb
verb
- simple past and past participle of heat
Origin
From Middle English hete, from Old English hǣtu, from Proto-West Germanic *haitī, from Proto-Germanic *haitį̄ (“heat”), from Proto-Indo-European *keHy- (“heat; hot”). Cognate with Scots hete (“heat”), Saterland Frisian Hatte (“heat”), Old High German heizī (“heat”). Related also to Dutch hitte (“heat”), German Hitze (“heat”), Swedish hetta (“heat”), Faroese and Icelandic hiti (“heat”). Related to hot.
From Wiktionary, via Kaikki.org (CC BY-SA)