ENDOCARDIUM
endocardium
(noun) the membrane that lines the cavities of the heart and forms part of the heart valves
Source: WordNet® 3.1
Noun
endocardium (plural endocardia)
(anatomy, cardiology) A thin serous membrane that lines the interior of the heart.
Source: Wiktionary
En`do*car"di*um, n. Etym: [NL., fr. Gr. (Anat.)
Definition: The membrane lining the cavities of the heart.
Source: Webster’s Unabridged Dictionary 1913 Edition
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21 April 2025
ENCYCLOPEDIA
(noun) a reference work (often in several volumes) containing articles on various topics (often arranged in alphabetical order) dealing with the entire range of human knowledge or with some particular specialty
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