auricula atrii

Thesaurus

Noun

1.auricula atrii - a small conical pouch projecting from the upper anterior part of each atrium of the heartatrial auricle, auricleatrium cordis, atrium of the heart - the upper chamber of each half of the heartpouch, pocket - (anatomy) saclike structure in any of various animals (as a marsupial or gopher or pelican)