According to Wikipedia, a saint is defined as “a person who is recognized as having an exceptional degree of holiness…”
While the English term “saint” originated in Christianity, historians of religion now use the appellation in a more general way to refer to the state of special holiness that many religions attribute to certain people with remarkable conviction and generosity of spirit, including members of the Jewish, Islamic, Hindu and Buddhist faiths. Depending on the religion, saints are recognized either by official ecclesiastical declaration and denomination or by popular acclamation.