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English definition of “warm (sb/sth) up”

warm (sb/sth) up

phrasal verb with warm     /wɔːm/ US  /wɔːrm/ verb [I or T]
to become warmer or to make someone or something warmer: The house soon warms up with the heating on. I'll just warm up the engine while you're getting your coats on.Warm
(Definition of warm (sb/sth) up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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