Share this entry

Share this page

mediastinum

Syllabification: me·di·as·ti·num
Pronunciation: /ˌmēdēəˈstīnəm
 
/

Definition of mediastinum in English:

noun (plural mediastina /-əˈstīnə/)

Anatomy
A membranous partition between two body cavities or two parts of an organ, especially that between the lungs.
Example sentences
  • The tumor, which is often but not always associated with cystic lung lesions, may arise in pulmonary parenchyma, the mediastinum, and pleura.
  • On the lateral radiograph there appeared to be herniation of the left lung through the anterior mediastinum.
  • The left main bronchus was exposed at the posterior mediastinum and separated from connective tissue.

Origin

late Middle English: neuter of medieval Latin mediastinus 'medial', based on Latin medius 'middle'.

Derivatives

mediastinal

1
Pronunciation: /-ˈstīnl/
adjective
Example sentences
  • One patient had extensive cervical, posterior mediastinal, and abdominal lymphadenopathy.
  • Two patients presented with masses in the upper lobe of the right lung, simulating posterior mediastinal tumors.
  • All men with mediastinal lung masses require a careful testicular examination.

Definition of mediastinum in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day jaunt
Pronunciation: dʒɔːnt
noun
a short excursion or journey made for pleasure