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lymph node
noun
: any of the rounded masses of lymphoid tissue that are surrounded by a capsule of connective tissue, are distributed along the lymphatic vessels, and contain numerous lymphocytes which filter the flow of lymph passing through the node
Examples of lymph node in a Sentence
Recent Examples on the Web
The wave of prions slowly accumulates, spreading through the spleen and the lymph nodes and through the peripheral nervous system into the central nervous system.
—Sophie Hartley, Scientific American, 10 Jan. 2025
Obesity can also affect lymph nodes (a key part of the immune system) and immune cell activity.7
Managing weight can boost immunity.
—Mark Gurarie, Verywell Health, 9 Jan. 2025
The 85-year-old Vitale underwent surgery in June after a biopsy of the lymph node in his neck came back cancerous, marking his fourth cancer diagnosis.
—Jenna West and Andrew Marchand, The Athletic, 9 Jan. 2025
The study found that people with locally advanced breast cancer — meaning tumors had spread into surrounding tissue and lymph nodes but not to distant parts of the body — were 9 percent more likely to have cardiovascular disease.
—Lisa Rapaport, EverydayHealth.com, 3 Jan. 2025
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Word History
First Known Use
1892, in the meaning defined above
Dictionary Entries Near lymph node
Cite this Entry
“Lymph node.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lymph%20node. Accessed 19 Jan. 2025.
Kids Definition
lymph node
noun
: one of the rounded masses of tissue occurring along the lymphatic vessels and containing lymphocytes which filter the flow of lymph
called also lymph gland
Medical Definition
lymph node
noun
: any of the rounded masses of lymphoid tissue that are surrounded by a capsule of connective tissue, are distributed along the lymphatic vessels, and contain numerous lymphocytes which filter the flow of lymph passing through the node
called also lymph gland
More from Merriam-Webster on lymph node
Britannica.com: Encyclopedia article about lymph node
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