Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun atrium_sinistrum
1 sense of atrium sinistrum
Sense 1
left atrium, left atrium of the heart, atrium sinistrum -- (the left upper chamber of the heart that receives blood from the pulmonary veins)
=> atrium cordis, atrium of the heart -- (the upper chamber of each half of the heart)