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.
Your MNT account status. Tomatoes: Health Benefits, Facts, Research. Whether you refer to a tomato as a fruit or a vegetable, there is no doubt that a tomato is a nutrient-dense, super-food that most people should be eating more of. The tomato has been referred to as a functional food, a food that goes beyond providing just basic nutrition.