Meaning of N in English
I. N 1 BrE AmE , n /en/ ( plural N’s , n’s ) noun [uncountable and countable]
1 . the 14th letter of the English alphabet
2 . used in mathematics to represent a number whose value is not known:
The value of n is less than 10.
II. N 2 BrE AmE
the written abbreviation of north or northern
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012