thoracic cavity

plural thoracic cavities

Definition of thoracic cavity

: the cavity of the thorax (see thorax sense 1) that is bounded below by the diaphragm, is enclosed by the sternum, ribs, and thoracic vertebrae, and that contains the heart and lungs … an inflammation of the thoracic cavity which feels like a burning stiffness of the muscles …— Harold Brodky

First Known Use of thoracic cavity

1779, in the meaning defined above

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The first known use of thoracic cavity was in 1779

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thoracic cavity

thoracic choke

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Cite this Entry

“Thoracic cavity.” Dictionary, Merriam-Webster, Accessed 29 Nov. 2021.

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More Definitions for thoracic cavity

thoracic cavity


Medical Definition of thoracic cavity

: the division of the body cavity that lies above the diaphragm, is bounded peripherally by the wall of the chest, and contains the heart and lungs


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