Ser•ve•tus(sər vē′təs),USA pronunciationn.Michael, 1511–53, Spanish physician and theologian, accused of heresy and burned at the stake. Spanish, Mi•guel Ser•ve•to(mē gel′ ser ve′tô).USA pronunciationSer•ve•tian(sər vē′shən),USA pronunciationn.Ser•ve′tian•ism, n.