CARDIAC Meaning of CARDIAC in English [ 'kα:dɪak ]■ adjective1》 relating to the heart. 2》 relating to the cardia of the stomach.OriginME: from Fr. cardiaque or L. ~us , from Gk kardiakos , from kardia 'heart, cardia'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004