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Definition of rigor noun from the Oxford Advanced American Dictionary

     

    rigor

     noun
    (rigour) noun
    NAmE//ˈrɪɡər//
     
     
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  1. 1[uncountable] the fact of being careful and paying great attention to detail academic/intellectual/scientific, etc. rigor
  2. 2 [uncountable] (formal) the fact of being strict or severe This crime must be treated with the full rigor of the law.
  3. 3 the rigors of something [plural] the difficulties and unpleasant conditions of something The plants were unable to withstand the rigors of a harsh winter. She woke refreshed to face the rigors of a new day.

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