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mediastinum

Definition:

the part of the thoracic cavity between the lungs that contains the heart, aorta, esophagus, trachea, and thymus

Class:

body noun (body parts)

Plurals:

mediastina | mediastinums

Original source:

Princeton WordNet

Etymology:

New Latin mediastīnum, from neuter of Medieval Latin mediastīnus, medial, from...
(Source: American Heritage Dictionary)  [more]

Definition references  (+images)

Wikipedia:

Mediastinum

an undelineated group of structures in the thorax, surrounded by loose connective tissue. It's the central compartment of the thoracic cavity. It contains the heart, the great vessels of the heart, the esophagus, the trachea, the phrenic nerve, the ... (39 of 647 words, 2 images)

en​.wikipedia​.org​/wiki​/Mediastinum

Collins Dictionary:

mediastinum | mediastina [plural] | mediastinal [adjective, derived]

a membrane between two parts of an organ or cavity such as the pleural tissue between the two lungs | the part of the thoracic cavity that lies ... (27 of 242 words, 2 definitions, 1 usage example, pronunciations)

www​.collinsdictionary​.com​/dictionary​/english​/mediastinum

Britannica Encyclopedia:

mediastinum [anatomy]

the anatomic region located between the lungs that contains all the principal tissues and organs of the chest except the lungs. It extends from the ... (25 of 99 words)

www​.britannica​.com​/E​Bchecked​/topic​/372181​/mediastinum

New World Dictionary:

mediastinum | mediastina [plural] | mediastinal [adjective, related]

a membranous partition between two cavities of the body, especially that separating the lungs or the two pleural sacs | the space between the pleural ... (24 of 66 words, 2 definitions, pronunciations)

www​.yourdictionary​.com​/mediastinum

American Heritage Dictionary:

mediastinum | mediastina [plural] | mediastinal [adjective, related]

The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs. (20 of 62 words, pronunciations)

www​.yourdictionary​.com​/mediastinum

Merriam-Webster:

mediastinum | mediastina [plural] | mediastinal [adjective, related]

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 ; ... (28 of 62 words, pronunciations)

www​.merriam-webster​.com​/dictionary​/mediastinum

Oxford Dictionary:

mediastinum | mediastina [plural] | mediastinal [derived]

Syllabification: (me·di·as·ti·num) | [anatomy] | a membranous partition between two body cavities or two parts of an organ, especially that between ... (19 of 61 words, 3 definitions, pronunciations)

oxforddictionaries​.com​/definition​/american english​/mediastinum

mediastinum [anatomy] | mediastina [plural] | mediastinal [derived]

a membranous partition between two body cavities or two parts of an organ, especially that between the lungs (18 of 57 words, pronunciations)

oxforddictionaries​.com​/definition​/english​/mediastinum

Random House Dictionary:

mediastinum [anatomy] | mediastina [plural]

a median septum or partition between two parts of an organ, or paired cavities of the body. | the partition separating the right and left thoracic ... (25 of 58 words, 2 definitions, pronunciations)

dictionary​.infoplease​.com​/mediastinum

Wiktionary:

mediastinum [anatomy] | mediastina [plural]

The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs. (20 of 22 words)

en​.wiktionary​.org​/wiki​/mediastinum

Macmillan British Dictionary:

cavity [countable] | cavities [plural]

a hole or space inside a solid object ; a space inside someone's body ; a hole in a tooth, caused by decay (23 of 46 words, 1 usage example, pronunciation)

www​.macmillandictionary​.com​/dictionary​/british​/cavity

Cambridge Dictionary:

cavity

a hole, or an empty space between two surfaces | a hole in a tooth (14 of 28 words, 2 definitions, 1 usage example, pronunciations)

dictionary​.cambridge​.org​/dictionary​/british​/cavity

Encarta Dictionary:

mediastinum | mediastina [plural]

in mammals, the region of the chest between the lungs that contains the heart, trachea, and other organs (18 of 55 words, pronunciations)

encarta​.msn​.com​/dictionary 1861628990​/definition​.html  [offline]

Etymology references

American Heritage Dictionary:

mediastinum | mediastina [plural]

Origin: New Latin mediastīnum, from neuter of Medieval Latin mediastīnus, medial, from Latin, inferior servant, drudge ... (15 of 31 etymology words)

www​.yourdictionary​.com​/mediastinum

New World Dictionary:

mediastinum | mediastina [plural]

Origin: Modern Latin from Medieval Latin mediastinus, in the middle (form influenced by Latin mediastinus, servant, medical assistant) from ... (18 of 23 etymology words)

www​.yourdictionary​.com​/mediastinum

Collins Dictionary:

mediastinum | mediastina [plural]

First use: 16th century

Origin: from medical Latin, neuter of Medieval Latin mediastīnus median, from Latin: low grade of servant, from medius mean

www​.collinsdictionary​.com​/dictionary​/english​/mediastinum

Oxford Dictionary:

mediastinum | mediastina [plural]

Origin: late Middle English: neuter of medieval Latin mediastinus "medial", based on Latin medius "middle"

oxforddictionaries​.com​/definition​/american english​/mediastinum

Merriam-Webster:

mediastinum | mediastina [plural]

First use: 1541

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

www​.merriam-webster​.com​/dictionary​/mediastinum

Encarta Dictionary:

mediastinum | mediastina [plural]

First use: 15th century

Origin: medieval Latin, form of mediastinus "medial" from Latin, "common servant" from medius "middle"

encarta​.msn​.com​/dictionary 1861628990​/definition​.html  [offline]

Audio references

Collins Dictionary:

mediastinum | mediastina [plural]

Audio: British English pronunciation of "mediastinum"

www​.collinsdictionary​.com​/dictionary​/english​/mediastinum

the Free Dictionary:

mediastinum

Audio 1: British English pronunciation of "mediastinum"

Audio 2: North American English pronunciation of "mediastinum" by speech synthesizer

www​.thefreedictionary​.com​/mediastinum

Google Dictionary:

mediastinum | mediastina [plural]

Audio: English pronunciation of "mediastinum"

www​.google​.com​/#hl=en&tbs=dfn​:1&fp=1&q=mediastinum

Merriam-Webster Pronunciation:

mediastinum

Audio: North American pronunciation of "mediastinum"

www​.merriam-webster​.com​/audio​.php file=medias​01 word=mediastinum

YourDictionary Audio:

mediastinum

Audio: North American English pronunciation of "mediastinum" by speech synthesizer

www​.yourdictionary​.com​/mediastinum

Page last updated: 2013-06-26

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