white matter

noun

Definition of white matter

: 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

Recent Examples on the Web Studies have shown that learning a new language promotes cognitive health in myriad ways, increasing the volume of gray and white matter and enhancing overall brain connectivity. Annie Lane, oregonlive, "Dear Annie: Christmas dinner disaster drives wedge between sisters," 13 Mar. 2021 Studies have shown that learning a new language promotes cognitive health in myriad ways, increasing the volume of gray and white matter and enhancing overall brain connectivity. Annie Lane, oregonlive, "Dear Annie: Christmas dinner disaster drives wedge between sisters," 13 Mar. 2021 Studies have shown that learning a new language promotes cognitive health in myriad ways, increasing the volume of gray and white matter and enhancing overall brain connectivity. Annie Lane, oregonlive, "Dear Annie: Christmas dinner disaster drives wedge between sisters," 13 Mar. 2021 Studies have shown that learning a new language promotes cognitive health in myriad ways, increasing the volume of gray and white matter and enhancing overall brain connectivity. Annie Lane, oregonlive, "Dear Annie: Christmas dinner disaster drives wedge between sisters," 13 Mar. 2021 Studies have shown that learning a new language promotes cognitive health in myriad ways, increasing the volume of gray and white matter and enhancing overall brain connectivity. cleveland, "Dear Annie: Holiday fallout has led to sibling estrangement," 12 Mar. 2021 Lea Alhilali, a physician and researcher at the Barrow Neurological Institute who did not participate in this study, uses diffusion tensor imaging (an MRI technique) to measure the integrity of white matter in the brain. Jordana Cepelewicz, Scientific American, "A Single Concussion May Triple the Long-Term Risk of Suicide," 8 Feb. 2016 Juggling changes not only gray matter, the brain’s processing centers, but also white matter, the networked connections that bind it all together. Tom Vanderbilt, WSJ, "For New Year’s Resolutions, Never Think You’re Too Old to Become a Beginner," 31 Dec. 2020 Prior studies have also found unusual electroencephalographic patterns in the frontal lobes of children, along with changes in the white matter responsible for organizing communication between the various parts of the brain. Sandee Lamotte, CNN, "Stress during pregnancy may harm unborn baby's brain, studies find," 7 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'white matter.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of white matter

1674, in the meaning defined above

Keep scrolling for more

Learn More about white matter

Time Traveler for white matter

Time Traveler

The first known use of white matter was in 1674

See more words from the same year

Statistics for white matter

Last Updated

1 May 2021

Cite this Entry

“White matter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/white%20matter. Accessed 9 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for white matter

white matter

noun

Medical Definition of white matter

: 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 gray matter

More from Merriam-Webster on white matter

Britannica.com: Encyclopedia article about white matter

Comments on white matter

What made you want to look up white matter? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Star Wars Words Quiz

  • cu jedi training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!