noun, abbreviation
noun (also n) (plural N's, n's )
1 [C,U] the 14th letter of the English alphabet:
'Night' begins with (an) N / 'N'.
2 [U] (mathematics) used to represent a number whose value is not mentioned:
The equation is impossible for any value of n greater than 2.
seealsoNTH
abbreviation (AmE also No.) north; northern:
N Ireland
