cardiopulmonary Syllabification: (car·di·o·pul·mo·nar·y)Pronunciation: /ˌkärdēōˈpo͝olməˌnerē, -ˈpəl-/Definition of cardiopulmonary adjective Medicine of or relating to the heart and the lungs. cardiopulmonary in other Oxford dictionaries Definition of cardiopulmonary in the British & World English dictionary