Princeton's WordNet(4.60 / 5 votes)Rate this definition: 1  operation(noun) the state of being in effect or being operative. 2  operation(noun) a business especially one run on a large scale. 3  operation(noun) a planned activity involving many people performing various actions.
Tomatoes are a nutrient-dense food, meaning they are jam-packed with nutrients, but don't have a lot of calories. Lipids, carbs and protein are the three types of macronutrients your body breaks down for energy. The primary macronutrient in tomatoes is carbohydrates, although they do have trace amounts of fat and protein.
Unlike starches, however, fruits and vegetables contain simple carbohydrates, which have one or two sugars bonded together; these simple carbs digest more quickly than complex carbs. Fruits, such as bananas, grapes, apples, cantaloupe and oranges, have more carbohydrates per serving than vegetables like broccoli, spinach, carrots, eggplant, mushrooms and kale.