vena cava definition, meaning - what is vena cava in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online

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vena cava

noun [C] uk   us   /ˌviː.nəˈkeɪ.və/ (plural venae cavae ) specialized
one of the two very large veins through which blood returns to the heart, one from the upper body and head and one from all of the body below the chest: The superior (= upper) and inferior (= lower) venae cavae collect blood that has circulated around the body.
(Definition of vena cava from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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