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

      

    tomorrow

     noun
    noun
    BrE BrE//təˈmɒrəʊ//
     
    ; NAmE NAmE//təˈmɔːroʊ//
     
    , NAmE//ˈmɑːr//
     
    [uncountable]
     
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  1. 1  the day after today Today is Tuesday, so tomorrow is Wednesday. tomorrow afternoon/morning/night/evening I'll see you the day after tomorrow. The announcement will appear in tomorrow's newspapers. I want it done by tomorrow. Tomorrow will be fine and dry according to the weather forecast.
  2. 2  the future Who knows what changes tomorrow may bring? Tomorrow's workers will have to be more adaptable. We need to plan for a better tomorrow.
  3. Word Origin Middle English (as two words): from the preposition to + morrow. Compare with today and tonight.Idioms
    do something as if/like there’s no tomorrow
     
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    to do something a lot or as though you do not care what effects it will have I ate as if there was no tomorrow. She spends money like there's no tomorrow.
See the Oxford Advanced American Dictionary entry: tomorrow