mediastinum

noun

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me·di·as·ti·num | \ ˌmē-dē-ə-ˈstī-nəm

plural mediastina\ ˌmē-dē-ə-ˈstī-nə

Definition of mediastinum

: 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

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Recent Examples on the Web Limited-stage disease is used to describe lung cancer that’s only found within one lung, and may be found in the mediastinum between the lungs. — Amanda Macmillan, Health.com, "The Stages of Lung Cancer, Explained," 23 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mediastinum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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“Mediastinum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mediastinum. Accessed 14 May. 2021.

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More Definitions for mediastinum

mediastinum

noun

me·di·as·ti·num | \ ˌmēd-ē-ə-ˈstī-nəm

plural mediastina\ -nə

Medical Definition of mediastinum

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 : mediastinum testis

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