Is a tomatoes a fruit or a vegetable?

Technically it's a fruit.

It is classified as a fruit. So is an avacodo.

Tomatos are a fruit

According to scientific definition - anything that has seeds is a fruit. That means that pumpkin, tomato, capsicum, cucumber and squash are botanical fruits - as far as scientific terms are concerned.

This makes your tomato a fruit.

Modern society commonly refers to all these fruits as vegetables:
Pumpkin
Squash
Tomato (In America)
Cucumbers
Green beans

The United States Supreme Court entered into this debate and gave a legal verdict on whether a tomato should be classified as a vegetable or a fruit. They decided unanimously, in Nix versus Hedden, 1883, that a tomato is a vegetable, even though it is a botanical fruit.