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English definition of “pericardium”

pericardium

noun [C] uk   /ˌper.ɪˈkɑː.di.əm/ us    /ˌper.ɪˈkɑr.di.əm/ (plural pericardia) specialized
the double layer of tissue that surrounds the heart: The function of the pericardium is to protect and lubricate the heart.
(Definition of pericardium from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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