Definition of "NEC"

Initialism of not elsewhere classified, used in classification codes such as Standard Industrial Classification, International Standard Classification of Occupations, DSM-IV-TR, DSM-5, ICD-9, and ICD-10.  examples

Initialism of National Exhibition Centre, the largest exhibition space in the United Kingdom.  examples

(politics) Initialism of National Executive Committee, a leadership body of a political party.  examples

(historical) Initialism of Nippon Electric Company, Ltd. (renamed to NEC in 1983.)

(US) Initialism of National Electrical Code.  examples

(US, rail transport) Initialism of Northeast Corridor.  examples

(astronomy) Initialism of near-Earth comet.  examples

(retail) Initialism of net explosive content.  examples

(Internet, Wikimedia jargon) Initialism of new entry created.  examples