What is the definition or description of: high nutrient density foods?

Nutrient density: Nutrient density is a scale that was created to compare a food's nutrient worth to its caloric load. Foods that are low in calories but high in vitamins, minerals, antioxidants, etc will have a high nutrient density. The higher the density the "better" a food is for you (in theory). Foods like green vegetables have a high density while foods like cheese have a low density.

Nutrients/calories: Nutrient density is an attempt to quantify the level of nutrients like vitamins, minerals & phytonutrients per calorie of food. Thus, healthy foods like fruits & vegetables are considered high nutrient density while junk foods like sodas and french fries with lots of calories but few nutrients have low ratings. This is a useful concept. See http://www.Drfuhrman.Com/library/article17.Aspx.