verruca /vəro̅o̅″kə/ pl. verrucae [L, wart] , a benign, viral, warty skin lesion with a rough, papillomatous surface. It is caused by a common contagious papovavirus. Methods of treatment include salicylic acid, cantharidin, electrodesiccation, curette excision, laser excision, and liquid nitrogen. Also called verruca vulgaris, wart. −verrucous, verrucose, adj.