The tomato is the edible berry of the plant Solanum lycopersicum, commonly known as the tomato plant. The species originated in western South America and Central America. The Mexican Nahuatl word tomatl gave rise to the Spanish word tomate, from which the English word tomato derived. The age-old question actually has an answer—it's both! Tomatoes are fruits that are considered vegetables by nutritionists. Botanically, a fruit is a ripened flower ovary and contains seeds. Tomatoes are botanically defined as fruits because they form from a flower and contain seeds. Still, they're most often utilized like a vegetable in cooking. In fact, the US Supreme Court ruled in 1893 that the tomato should be classified as a vegetable on the basis of its culinary applications. Although in culinary terms, tomato is regarded as a vegetable, its fruit is classified botanically as a berry. As a true fruit, it develops from the ovary of the plant after fertilization, its flesh comprising the pericarp walls. The fruit contains hollow spaces full of seeds and moisture, called locular cavities. They are usually red, scarlet, or yellow, though green and purple varieties do exist, and they vary in shape from almost spherical to oval and elongate to pear-shaped. Each fruit contains at least two cells of small seeds surrounded by jellylike pulp. Tomatoes are rich in lycopene, an antioxidant that is good for the heart and effective against certain cancers. Tomatoes are also packed with vitamins A and C, calcium and potassium.