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English definition of “warm up”

warm up

phrasal verb with warm     /wɔːm/ verb [I, T]
to do gentle exercises in order to prepare yourself for more energetic exercise : They were warming up before the match .Exercising and training
warm-up     /ˈwɔːmʌp/ noun [C]
(Definition of warm up from the Cambridge Learner's Dictionary © Cambridge University Press)

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