Definition of era noun from the Oxford Advanced Learner's Dictionary

     

    era

     noun
    noun
    BrE BrE//ˈɪərə//
     
    ; NAmE NAmE//ˈɪrə//
     
    , NAmE//ˈerə//
     
     
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  1. 1a period of time, usually in history, that is different from other periods because of particular characteristics or events the Victorian/modern/post-war era When she left the firm, it was the end of an era (= things were different after that). a new era of peace
  2. 2 (geology) a length of time which is a division of an aeon
  3. Word Origin mid 17th cent.: from late Latin aera, denoting a number used as a basis of reckoning, an epoch from which time is reckoned, plural of aes, aer- ‘money, counter’.Extra examples The country has entered an era of high unemployment. The fall of the Berlin Wall ushered in a whole new era. The room had the elegance of a bygone era. We live in an era of religious uncertainty. a new era in the history of art a practice that has survived into the present era movies of the silent era the early centuries of the Christian Era the golden era of radio In the modern era, the state is the provider of welfare. It is one of the most famous churches built in the Victorian era. This is the start of a new era of peace and prosperity. When she left the firm, it was the end of an era.
See the Oxford Advanced American Dictionary entry: era