Definition of N noun from the Oxford Advanced American Dictionary

     

    N

     noun
    noun
    NAmE//ɛn//
     
    n(pl. Ns, N's, n's
    NAmE//ɛnz//
     
    )
     
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  1. 1 [countable, uncountable] the 14th letter of the English alphabet “Night” begins with (an) N/“N.”
  2. 2n [uncountable] (mathematics) used to represent a number whose value is not mentioned The equation is impossible for any value of n greater than 2. see also nth
See the Oxford Advanced Learner's Dictionary entry: N