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English definition of “turn on sth”

turn on sth

phrasal verb with turn     /tɜːn/ US  /tɝːn/ verb
If something turns on something else, it depends on it or is decided by it: The success of the talks turns on whether both sides are willing to make some concessions.Being based on or depending on something
(Definition of turn on sth from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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