English dictionary
endocardium
/,/E/nd/oU/'k/A/rd/i//@/m/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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the membrane that lines the cavities of the heart and forms part of the heart valves
Source: WordNet 3.0
-
The membrane lining the cavities of the heart.
Source: webster1913