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gray matter
noun
Synonyms
Examples of gray matter in a Sentence
she's got the gray matter to figure that equation out
Recent Examples on the Web
Past studies have also examined changes in the brain during pregnancy, including the decreases in gray matter volume, as well as a reduction in brain size.
—Melissa Willets, Parents, 25 Sep. 2024
Research shows that regular mindfulness meditation not only improves well-being but also increases gray matter density in brain areas associated with self-awareness and empathy.
—Nik Ershov, Forbes, 31 Oct. 2024
Some of the changes, including the reduction in gray matter, remained two years postpartum, while others, such as the white matter increase, were temporary.
—Melissa Willets, Parents, 25 Sep. 2024
And compared with the control group, change in the woman’s gray matter volume was nearly three times higher.
—Kristen Rogers, CNN, 16 Sep. 2024
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Word History
First Known Use
1809, in the meaning defined at sense 1
Dictionary Entries Near gray matter
Cite this Entry
“Gray matter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gray%20matter. Accessed 23 Nov. 2024.
Kids Definition
gray matter
noun1
: nerve tissue especially of the brain and spinal cord that has a brownish gray color
Medical Definition
gray matter
noun
: neural tissue especially of the brain and spinal cord that contains cell bodies as well as nerve fibers, has a brownish gray color, and forms most of the cortex and nuclei of the brain, the columns of the spinal cord, and the bodies of ganglia
called also gray substance
More from Merriam-Webster on gray matter
Britannica.com: Encyclopedia article about gray matter
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