1. (of a title, office, or right) conferred by or based on inheritance: "members of the ancient Polish aristocracy who had hereditary right to elect the king"
▪ (of a person) holding a position by inheritance: "I am the hereditary chief of the Piscataway people"
▪ (of a characteristic or disease) determined by genetic factors and therefore able to be passed on from parents to their offspring or descendants: "cystic fibrosis is our most common fatal hereditary disease"Similargeneticgeneticalcongenitalinborninherentinheritedinbredinnatein the familyin the bloodin the genes