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.
Eating lots of tomatoes, any way you can, is a great thing. This fruit that acts like a vegetable is loaded with health properties. Here are 10 reasons why you should have tomatoes in your kitchen and pantry: Tomatoes contain all four major carotenoids: alpha- and beta-carotene, lutein, and lycopene.