megalocardiaWiktionary 原文英美构词拆解megalomegalo-前缀cardia-cardia后缀megalo-large, great or exaggerated-cardia(cardiology) Forms nouns relating to a heart condition.词源链原始词根原始印欧语Proto-Indo-European约前 4500–前 2500 年*ḱerd-英语Englishmegalocardia词源说明From megalo- + -cardia.释义名词noun1(medicine) The condition of having an enlarged heart.