A meal plan is a plan that outlines what meals an individual will eat over a certain period of time. It typically includes a MENU of food items and a DIET plan that specifies the types and amounts of food to be eaten. MENU is a four letter word that refers to a list of food items that are available for selection, while DIET is a four letter word that refers to the types and amounts of food that should be consumed. Meal plans are often used by individuals who are trying to lose weight or maintain a healthy lifestyle.