grey matter
Britishnoun
-
Technical name: substantia grisea. the greyish tissue of the brain and spinal cord, containing nerve cell bodies, dendrites, and bare (unmyelinated) axons Compare white matter
-
informal brains or intellect
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
There will be a small amount of fluctuation in every person's grey matter over time, but these results with a dip of nearly 5% are unexpected, Carmona says.
From BBC ● Mar. 4, 2026
A number of studies in teens have suggested a pattern of grey matter thinning through adolescence with a "refining or pruning" of nerve networks as brains mature.
From BBC ● Mar. 4, 2026
They examined grey matter, which consists of neuron cell bodies and is often described as the brain’s “thinking” tissue.
From Science Daily ● Feb. 19, 2026
Researchers found reduced grey matter volume in several important brain regions among women who had gone through menopause.
From Science Daily ● Feb. 7, 2026
The little spark of grey matter behind the eyes of a little child may become a Newton, a Knox, or a Walter Scott.
From Victory out of Ruin by Maclean, Norman
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
