Noun atrium cordis has 1 sense
  1. atrium cordis, atrium of the heart - the upper chamber of each half of the heart
    --1 is a kind of atrium
    --1 has parts:
     auricle, atrial auricle, auricula atrii; auricula, auricular appendage, auricular appendix
    --1 has particulars:
     right atrium, right atrium of the heart, atrium dextrum; left atrium, left atrium of the heart, atrium sinistrum
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