Definition of week noun from the Oxford Advanced American Dictionary

      

    week

     noun
    noun
    NAmE//wik//
     
    (abbreviation wk.)
     
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  1. 1a period of seven days, either from Monday to Sunday or from Sunday to Saturday last/this/next week It rained all week. What day of the week is it? He comes to see us once a week.
  2. 2any period of seven days a two-week vacation The course lasts five weeks. a week ago today (= seven days ago) I will be away for a couple of weeks. She'll be back in a week.
  3. 3 the five days other than Saturday and Sunday They live in town during the week and go to the country for the weekend.
  4. 4 the part of the week when you go to work a 35-hour week see also workweek
  5. Idioms
    the other day/morning/evening/week
     
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    recently I saw Jack the other day.
    week after week(informal)
     
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    continuously for many weeks Week after week the drought continued.
    week by week
     
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    as the weeks pass Week by week he grew a little stronger.
    week in, week out
     
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    happening every week Every Sunday, week in, week out, she goes to her parents for lunch.
    a week (from) today, etc.
     
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     seven days after the day that you mention I'll see you a week from Thursday.
See the Oxford Advanced Learner's Dictionary entry: week