Before we can figure out exactly what a tomato is, let's first take a look at what fruits and vegetables are. As it turns out, there are a couple of different ways to define each.
On the other hand, cooks define vegetables as the edible parts of a plant with a savory flavor. These can include, for example, the leaves (lettuce), stems (celery), roots (carrots) and flowers (broccoli) of plants. Scientists have no specific definition for vegetables.
Using these definitions, we can begin to answer the question of whether a tomato is a fruit or a vegetable. According to scientists, tomatoes are clearly fruits, since they are the part of the tomato plant that bears seeds.
So is this just one of those curious questions without any real significance? No!
The question of whether a tomato is a fruit or a vegetable actually made it all the way to the United States Supreme Court! In the 1893 case of Nix v. Hedden, the U.S. Supreme Court ruled that, for purposes of the tariff Act of March 3, 1883, tomatoes are vegetables.
The Supreme Court relied on the fact that tomatoes are usually used as vegetables since they're normally served with dinner and not dessert. The ruling, though, only applied to tax law and did not attempt to reclassify tomatoes scientifically.
When all is said and done, tomatoes are fruits according to scientists. However, many people — and most cooks — will continue to look at them as vegetables.
And if you're wondering if tomatoes are the only fruits that get treated like vegetables, they're not! Eggplants, bell peppers, cucumbers, zucchini, and pumpkins are all fruits that similarly get cooked as vegetables.
Some states have particular feelings about tomatoes, though. New Jersey officially named the tomato its state vegetable. Arkansas, on the other hand, saw both sides of the issue when it declared the South Arkansas Vine Ripe Pink tomato as the official state fruit and state vegetable!