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

     

    watershed

     noun
    noun
    BrE BrE//ˈwɔːtəʃed//
     
    ; NAmE NAmE//ˈwɔːtərʃed//
     
    , NAmE//ˈwɑːtərʃed//
     
    Producing TV shows
     
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  1. 1[countable] watershed (in something) an event or a period of time that marks an important change The middle decades of the 19th century marked a watershed in Russia's history.
  2. 2[countable] a line of high land where streams on one side flow into one river, and streams on the other side flow into a different river
  3. 3the watershed [singular] (in Britain) the time before which programmes that are not considered suitable for children may not be shown on television the 9 o’clock watershed See related entries: Producing TV shows
  4. Word Origin early 19th cent.: from water + shed in the sense ‘ridge of high ground’ (related to the verb shed), suggested by German Wasserscheide.Extra examples The 19th century marked a watershed between the country’s agricultural past and its industrial future. The completion of this project was a watershed event in the company’s history. The granting of the vote represented a watershed for the rights of women. With the strike, a historical watershed in the development of the trade union movement was reached. a watershed moment in recent music history a watershed year for Japan The middle decades of the 19th century marked a watershed in Russia’s history.
See the Oxford Advanced American Dictionary entry: watershed