Synset

the upper chamber of each half of the heart
<noun.body>

atrium of the heart

semantic pointers

part meronym

auricle, atrial auricle, auricula atrii auricula, auricular appendage, auricular appendix

hypernym

hyponym

right atrium, right atrium of the heart, atrium dextrum left atrium, left atrium of the heart, atrium sinistrum