NEE' NEE is an acronym for 'Not Elsewhere Classified, ' which is a term used in the United States to describe a category of goods or services that do not fit into any other existing classification. It is commonly used in the US Census Bureau's Standard Industrial Classification system, and is also used in the North American Industry Classification System. NEE is also used in the US Department of Labor's Occupational Safety and Health Administration's Hazard Communication Standard.