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atrium

2 ENTRIES FOUND:
  1. atrium (noun)
  2. oblique vein of the left atrium (noun)

atri·um

noun \ˈā-trē-əm\
plural atria \-trē-ə\ also atri·ums

Definition of ATRIUM

: an anatomical cavity or passage; especially : a chamber of the heart that receives blood from the veins and forces it into a ventricle or ventricles

Learn More About ATRIUM