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mediastinal

 - 5 dictionary results

me⋅di⋅as⋅ti⋅num

  [mee-dee-a-stahy-nuhm]
Use mediastinal in a Sentence
–noun, plural -as⋅ti⋅na  [-a-stahy-nuh] . Anatomy.
1. a median septum or partition between two parts of an organ, or paired cavities of the body.
2. the partition separating the right and left thoracic cavities, formed of the two inner pleural walls, and, in humans, comprising all the viscera of the thorax except the lungs.
Origin:
1535–45; < NL; cf. mediastīnus of middle class, appar. identical with L mediast(r)īnus a low-ranking slave, perh. deriv. of medius mid 1 , though sense and formation unclear

Related forms:
me⋅di⋅as⋅ti⋅nal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To mediastinal
me·di·as·ti·num   (mē'dē-ə-stī'nəm)   
n.   pl. me·di·as·ti·na (-nə)
The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs.

[New Latin mediastīnum, from neuter of Medieval Latin mediastīnus, medial, from Latin, inferior servant, drudge (anatomical sense probably influenced by Latin intestīnum, intestine), from medius, middle; see medhyo- in Indo-European roots.]
me'di·as·ti'nal (-nəl) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: me·di·as·ti·nal
Pronunciation: "mEd-E-&-'stI-n&l
Function: adjective
: of, relating to, or affecting themediastinum <mediastinal fibrosis>

Main Entry: me·di·as·ti·num
Pronunciation: "mEd-E-&-'stI-n&m
Function: noun
Inflected Form: plural me·di·as·ti·na /-n&/
1 : the space in the chest between the pleural sacs of the lungs that contains all the viscera of the chestexcept the lungs and pleurae; also : this space with its contents
2 : MEDIASTINUMTESTIS
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

mediastinum me·di·as·ti·num (mē'dē-ə-stī'nəm)
n. pl. me·di·as·ti·na (-nə)

  1. A septum between two parts of an organ or a cavity.

  2. The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs. Also called interpleural space, mediastinal space.

me'di·as·ti'nal (-nəl) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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