The posterior portion of the inferior mediastinum, lying between the pericardium and the vertebral column, and containing the descending aorta and oesophagus.
Origin
Late 18th century; earliest use found in Philosophical Transactions of the Royal Society of London.
Definition of posterior mediastinum in US English:
posterior mediastinum
noun
Anatomy
The posterior portion of the inferior mediastinum, lying between the pericardium and the vertebral column, and containing the descending aorta and oesophagus.
Origin
Late 18th century; earliest use found in Philosophical Transactions of the Royal Society of London.