Schwann cell

noun

: a myelin-secreting glial cell that spirally wraps around an axon of the peripheral nervous system to form the myelin sheath

Word History

Etymology

Theodor Schwann †1882 German naturalist

First Known Use

circa 1909, in the meaning defined above

Time Traveler
The first known use of Schwann cell was circa 1909

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Cite this Entry

“Schwann cell.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Schwann%20cell. Accessed 30 Jun. 2026.

Medical Definition

Schwann cell

noun
: a myelin-secreting glial cell that spirally wraps around an axon of the peripheral nervous system to form the myelin sheath

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