white matter
noun
: neural tissue especially of the brain and spinal cord that consists largely of myelinated nerve fibers bundled into tracts, has a whitish color, and typically underlies the cortical gray matter
Examples of white matter in a Sentence
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Compared with the brain of same-age peers, SuperAgers have fewer activated microglia, the resident immune cells of the brain, in their white matter.
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Sandee Lamotte, CNN Money, 7 Aug. 2025
In fact, the changes in gray and white matter were similar in people who were and were not infected.
—Alice Park, Time, 22 July 2025
In essence, the aforementioned inflammation can result in lasting damage to an individual’s white matter.
—Mark Travers, Forbes.com, 21 June 2025
Many lifestyle factors, including diet, can affect white matter.
—Avery Hurt, Discover Magazine, 17 Mar. 2025
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Sandee Lamotte, CNN Money, 7 Aug. 2025
In fact, the changes in gray and white matter were similar in people who were and were not infected.
—Alice Park, Time, 22 July 2025
In essence, the aforementioned inflammation can result in lasting damage to an individual’s white matter.
—Mark Travers, Forbes.com, 21 June 2025
Many lifestyle factors, including diet, can affect white matter.
—Avery Hurt, Discover Magazine, 17 Mar. 2025
See All Example Sentences for white matter
Cite this Entry
“White matter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20matter. Accessed 9 Sep. 2025.
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