Not elsewhere classified (NEC)

Last revised by Assoc Prof Frank Gaillard on 21 Sep 2021

Not elsewhere classified (NEC) is a term used in a variety of classification systems to denote an entity that has been fully characterized but whose features are contradictory and/or do not fit into established classifications. 

Not elsewhere classified (NEC) should not, however, be confused with not otherwise specified (NOS) which denotes an incompletely characterized.

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