单词	endocardium
释义	endocardium noun en·​do·​car·​di·​um ˌen-dō-ˈkär-dē-əm  plural endocardia ˌen-dō-ˈkär-dē-ə  : a thin serous membrane lining the cavities of the heart Word History Etymology New Latin First Known Use circa 1864, in the meaning defined above Medical Definition endocardium noun en·​do·​car·​di·​um -ˈkärd-ē-əm  plural endocardia -ē-ə  : a thin serous membrane lining the cavities of the heart
随便看	protocephala protocephalon Protoceras protoceratops protoceratopses protocerebral protocerebrum protochlorophyll Protochorda Protochordata protochordate Protociliata protociliate protoclastic protocneme Protococcaceae protococcal Protococcales protococcoid Protococcus protocol protocol statement protocolar protocolary protocoled

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