food definition
Medical Definition of FOOD. 1. : material consisting essentially of protein, carbohydrate, and fat used in the body of an organism to sustain growth, repair, and vital processes and to furnish energy; also: such material together with supplementary substances (as minerals, vitamins, and condiments).2. : nutriment in solid form.. : material consisting essentially of protein, carbohydrate, and fat used in the body of an organism to sustain growth, repair, and vital processes and to furnish energy; also: such material together with supplementary substances (as minerals, vitamins, and condiments). 2. : nutriment in solid form.