mediastinum

play
noun me·di·as·ti·num \ˌmē-dē-ə-ˈstī-nəm\

Definition of mediastinum

plural

mediastina

play \-nə\
  1. :  the space in the chest between the pleural sacs of the lungs that contains all the tissues and organs of the chest except the lungs and pleurae; also :  this space with its contents

mediastinal

play \-ˈstī-nəl\ adjective

Origin and Etymology of mediastinum

New Latin, from Medieval Latin, neuter of mediastinus medial, from Latin medius


Medical Dictionary

mediastinum

play
noun me·di·as·ti·num \ˌmēd-ē-ə-ˈstī-nəm\

Medical Definition of mediastinum

plural

mediastina

\-nə\play
  1. 1:  the space in the chest between the pleural sacs of the lungs that contains all the viscera of the chest except the lungs and pleurae; also :  this space with its contents

  2. 2:  mediastinum testis


Learn More about mediastinum


Seen and Heard

What made you want to look up mediastinum? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

lethargy or dullness

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time-traveler-quiz-which-word-came-first
  • Which came first?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!