In a plant pathological context, a vector is an insect that transits a virus disease. Vegan
Any part of a plant, other than the fruit or seed, that is used for food. Culinary usage is often different from horticultural usage. In the kitchen, tomatoes and cucumbers are vegetables but, botanically, they are fruits. Similarly, rhubarb is technically a vegetable, but is called a fruit in the kitchen.
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