cardiac UK /ˈkɑːdɪæk/US /ˈkɑɹdiˌæk/adjective 3noun 2forms 1 adjective3 •Pertaining to the heart. •Pertaining to the cardia of the stomach; cardial (cardial is the usual adjective in this sense). •(no longer used) Exciting action in the heart, through the medium of the stomach; cordial; stimulant. noun2 •A person with heart disease. •(old-fashioned) Heart disease. formscardiacs
