gyrus

American  

[jahy-ruhs] / ˈdʒaɪ rəs /

noun

Anatomy.

plural

gyri

1. a convolution, especially of the brain.

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gyrus British  

/ ˈdʒaɪrəs /

noun

1. another name for convolution

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gyrus Scientific  

/ jī′rəs /

plural

gyri

1. A rounded ridge, as on the surfaces of the cerebral hemispheres.

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Other Word Forms

• subgyrus noun

Etymology

Origin of gyrus

1835–45; < Latin gȳrus; see gyre

Compare meaning

How does gyrus compare to similar and commonly confused words? Explore the most common comparisons:

• gyrus vs. sulcus

Example Sentences

MRI scans revealed that most of the brain activity was concentrated in the angular gyrus, a portion of the parietal lobe of the brain.

From Salon • Jun. 5, 2024

Firstly, the researchers used a technique called optogenetics, where they added light-sensitive proteins to newly-formed neurons in the dentate gyrus, allowing the neurons to be activated by light.

From Science Daily • May 20, 2024

One of the most striking findings were in cells of the dentate gyrus, where the researchers detected an important reduction of the expression of Snhg11.

From Science Daily • Feb. 27, 2024

Additionally, they found that 1.8% of the parahippocampal gyrus and 0.8% of the cerebellum had shrunk compared to patients who were not COVID-19 positive.

From Salon • Dec. 27, 2023

The Parietal Lobe is also complex; its most anterior gyrus, named ascending parietal or post-central, ascends parallel to and immediately behind the fissure of Rolando.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" by Various