not applicable / not available / not assigned, no assignment / non-assessable / not attested / not approved

Initialism of no answer. / Initialism of nothing added.

Alternative form of n/a

a or an; the indefinite article (when the initial sound of what will follow is unclear)

Used with certain suffixes, such as -ian and -ese, when the base word ends in a vowel that is not readily elided. / (pharmacology) Alternative form of -ner-.

(organic chemistry) normal-form of a functional group (or molecule), being the long-chain form (unbranched chain)

plural of n

plural of N

(military) navy / north (see also n) / (linguistics) noun / (chess) knight

The ordinal number fourteenth, derived from this letter of the English alphabet, called en and written in the Latin script.