词根词缀：cardio-, cardi-, card-

【来源及含义】Greek: heart, pertaining to the heart

【相关词根词缀】 A cross reference of another word group that is related to: "heart": cor-, cord-.

【同源单词】acardia, acardiac, acardiotrophia, acardius, acleistocardia, acute myocardial infarction

词根词缀：exo-, ex-

【来源及含义】Greek: outer, outside, external; used as a prefix

【同源单词】exobiology, exobiotic, exocardia, exocardiac, exocardial, exocarp