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English definition of “unzip”

unzip

verb [T]     /ʌnˈzɪp/ (-pp-)
to open something by using a zip: He unzipped his suitcase.Unfastening and opening to return a computer file to its original size after it has been zipped (= reduced in size so that it can be easily sent or stored)Operating computers
(Definition of unzip verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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