gy·​rus | \ ˈjī-rəs How to pronounce gyrus (audio) \
plural gyri\ ˈjī-​ˌrī How to pronounce gyrus (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 It is usually caused by damage to the fusiform gyrus in the posterior temporal lobe and anterior portion of the occipital lobe. Daniel Gibbs, Scientific American, 21 Apr. 2021 With time, these neurofibrillary tangles can spread backwards into the fusiform gyrus. Daniel Gibbs, Scientific American, 21 Apr. 2021 That was not entirely surprising, considering the area of his brain that was affected included one of the areas involved in language processing - the left superior temporal gyrus. Eva Amsen, Forbes, 26 Feb. 2021 Then your noggin’s face- and color-recognition unit, the fusiform gyrus, puts it into context. Marion Renault, Popular Science, 27 Dec. 2020 Doctors believe that face blindness is caused by abnormalities or impairment in the brain—specifically the right fusiform gyrus, or a certain fold in the brain that helps with facial perception and memory, per the NINDS. Claire Gillespie,, 9 Sep. 2020 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, 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, 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, 20 Apr. 2018

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

27 May 2021

Cite this Entry

“Gyrus.” Dictionary, Merriam-Webster, Accessed 22 Jun. 2021.

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More Definitions for gyrus


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

Medical Definition of gyrus

: a convoluted ridge between anatomical grooves especially : convolution

More from Merriam-Webster on gyrus Encyclopedia article about gyrus


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