American English

Definition of unzip verb from the Oxford Advanced American Dictionary

     

    unzip

     verb
    verb
    NAmE//ʌnˈzɪp//
     
    Verb Forms present simple I / you / we / they unzip
     
    he / she / it unzips
     
    past simple unzipped
     
    -ing form unzipping
     
     
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  1. 1[transitive, intransitive] unzip (something) if you unzip a piece of clothing, a bag, etc., or if it unzips, you open it by undoing the zipper that fastens it opposite zip up
  2. 2 [transitive] unzip something (computing) to return a computer file to its original size after it has been compressed (= made smaller) synonym decompress, zip
See the Oxford Advanced Learner's Dictionary entry: unzip