gy·​rus | \ ˈjī-rəs How to pronounce gyrus (audio) \
plural gyri\ ˈjī-​ˌrī How to pronounce gyri (audio) \

Definition of gyrus

: a convoluted ridge between anatomical grooves especially : convolution sense 2

Examples of gyrus in a Sentence

Recent Examples on the Web Very soon after activity in the right middle frontal gyrus, located near the forehead, indicated a moment of insight, activity then occurred in the orbitofrontal cortex, above the eye, which is responsible for processing rewards. Galadriel Watson, Washington Post, "Why solving puzzles feels so satisfying, especially during a quarantine," 4 May 2020 The default network consists of a group of interconnected brain regions, including the medial prefrontal cortex, the posterior cingulate cortex, the angular gyrus and the hippocampus. Knvul Sheikh, Scientific American, "Creative Types Reserve a Special Corner of the Brain for Dreaming Big," 22 May 2019 And then there’s our friend the anterior cingulate gyrus, aka the worrywart center, which is more developed in the female brain. Katty Kay, Time, "How to Help Young Girls Keep Their Confidence During Puberty," 20 Apr. 2018 The structure called the cingulate gyrus, curving through the center of the brain, is hyperactive in murderers. Rob Verger, Newsweek, "Newsweek Rewind: 15 Years After Columbine, a Nation Still Asks ‘Why?’," 17 Apr. 2014 This time a different area, the parahippocampal gyrus (involved in spatial memory and navigation), responded — again as in a normal person. George Johnson, New York Times, "A Pioneering Neuroscientist Reports From ‘the Border of Life and Death’," 22 Aug. 2017 As expected, the act of improv led to a surge of activity in a variety of neural areas, including the premotor cortex and the inferior frontal gyrus. Jonah Lehrer, WIRED, "Basketball and Jazz," 6 June 2011

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

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First Known Use of gyrus

circa 1842, in the meaning defined above

History and Etymology for gyrus

New Latin, from Latin, circle — more at gyre

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Time Traveler for gyrus

Time Traveler

The first known use of gyrus was circa 1842

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Statistics for gyrus

Last Updated

14 May 2020

Cite this Entry

“Gyrus.” Dictionary, Merriam-Webster, Accessed 10 Jul. 2020.

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More Definitions for gyrus


gy·​rus | \ ˈjī-rəs How to pronounce gyrus (audio) \
plural gyri\ -​ˌrī How to pronounce gyri (audio) \

Medical Definition of gyrus

: a convoluted ridge between anatomical grooves especially : convolution

More from Merriam-Webster on gyrus

Rhyming Dictionary: Words that rhyme with gyrus Encyclopedia article about gyrus

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