- (medicine) Having to do with the mediastinum.
Variant of mediastinum
- a membranous partition between two cavities of the body, esp. that separating the lungs or the two pleural sacs
- the space between the pleural sacs, containing the heart and other chest viscera except the lungs
Origin of mediastinumModern Latin ; from Medieval Latin mediastinus, in the middle (form influenced, influence by Classical Latin mediastinus, servant, medical assistant) ; from Classical Latin medius, middle: see mid