A local growth of the epidermis caused by a virus.
The virus of warts (a papillomavirus) is transmitted by contact. The contact can be with a wart on someone else or one on oneself (autoinoculation).
The medical name for a wart is
verruca, the Latin for wart.
A common wart is a
A wart in medicine is also sometimes called
verruga, Spanish for wart.