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English definition of “fine-tune”

fine-tune

verb [T]     /ˌfaɪnˈtjuːn/ US  /-ˈtuːn/
to make very small changes to something in order to make it work as well as possible: She spent hours fine-tuning her speech.Correcting and mendingEditing and compiling
(Definition of fine-tune verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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