The onion (Allium cepa L., from Latin cepa "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus Allium. The onion plant has been grown and selectively bred in cultivation for at least 7,000 years.

Common Vegetables

In everyday usage, a vegetable is any part of a plant that humans consume as part of a savory meal.

The term "vegetable" is somewhat arbitrary and largely defined through culinary and cultural tradition. It normally excludes other food derived from fruits, nuts, and cereal grains, including seeds such as pulses.