Entomology definition of Endocardium September 7, 2014 Raj Entomology Dictionary 0 Please Like Us!!! DesiGoogly.com > Education News > Entomology Dictionary > Entomology definition of Endocardium Entomology definition of Endocardium: the inner lining membrane of the heart. Endocardium Entomology explanationEndocardium Entomology meaningEntomology Endocardium definitionReviews & Comments