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English definition of “tune in”

tune in

verb [T] uk phrasal verb with tune   /tjuːn/ us    /tuːn/

(TV/RADIO)

to watch or listen to a particular television or radio programme or station: Be sure to tune in to next week's show. Millions of viewers tune in every weekday for 'News at Night'.

(UNDERSTANDING)

be tuned in to have a good understanding of what is happening in a situation or what other people are thinking: She just doesn't seem to be tuned in to her students' needs.
(Definition of tune in from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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