heat Definition in Cambridge British English Dictionary
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Definition of "heat" - British English Dictionary

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heatnoun

uk   us   /hiːt/

heat noun (TEMPERATURE)

B1 [S or U] the quality of being hot or warm, or the temperature of something: the heat of the sun/fire How do you manage to work in this heat without air conditioning? She always wore a coat, even in the heat of summer. Cook the meat on a high/low heat (= at a high/low temperature).
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heat noun (IN BUILDING)

A2 [U] US (also mainly UK heating) the system that keeps a building warm: Is the heat on?

heat noun (RACE)

[C] a less important race or competition in which it is decided who will compete in the final event

heat noun (ANIMAL)

on heat UK (US in heat) An animal that is in heat is in a state of sexual excitement and ready to breed.

heatverb [I or T]

uk   us   /hiːt/
B2 to make something hot or warm, or to become hot or warm: A large house like this must be expensive to heat. Shall I heat up some soup for lunch?
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(Definition of heat from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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