mediastinum /,mi:diæs'tainәm/ 📖 中文释义 n. 纵隔[医] 纵隔 📘 English Definition(英文释义) n. the part of the thoracic cavity between the lungs that contains the heart and aorta and esophagus and trachea and thymus ← mediastinotomy M 字母词表 mediastinum cerebelli →