NC

(chemistry) Abbreviation of nitrocellulose.

(law) Initialism of nolo contendere, no contest, a plea in criminal cases.

(computing theory) Nick's Class, the complexity class of decision problems solvable in polylogarithmic time using a polynomial number of processors.

(linguistics) Initialism of noun class.

(US, aviation) prefix code for NASA research cargo plane designations.

(audio) Initialism of noise control.