1n or N 
/ˈɛn/ noun
plural n's or ns or N's or Ns /ˈɛnz/ /ˈɛn/ noun 1 : the 14th letter of the English alphabet [count] ▪ a word that starts with an n [noncount] ▪ a word that starts with n 2 [noncount] mathematics : a number that is part of an equation and that has a value that is not stated
▪ What is the value of n in the equation 5n + 2 = 37?
▪ What is the value of n in the equation 5n + 2 = 37?
