thoracic duct

noun

Definition of thoracic duct

: the main trunk of the system of lymphatic vessels that lies along the front of the spinal column and opens into the left subclavian vein

First Known Use of thoracic duct

circa 1741, in the meaning defined above

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The first known use of thoracic duct was circa 1741

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Cite this Entry

“Thoracic duct.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/thoracic%20duct. Accessed 12 December 2019.

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thoracic duct

noun

Medical Definition of thoracic duct

: the main trunk of the system of lymphatic vessels that lies along the front of the spinal column, extends from a dilatation behind the aorta and opposite the second lumbar vertebra up through the thorax where it turns to the left and opens into the left subclavian vein, and receives chyle from the intestine and lymph from the abdomen, the lower limbs, and the entire left side of the body

called also left lymphatic duct

More from Merriam-Webster on thoracic duct

Britannica English: Translation of thoracic duct for Arabic Speakers

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