Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from The Century Dictionary.

  • noun In anatomy, one of the rounded ridges into which the surface of the cerebral hemisphere is divided by the fissures or sulci; a convolution; a gyre.
  • noun The gyrus which arches over the extremity of the fissure of Sylvius. See sulcus.

from the GNU version of the Collaborative International Dictionary of English.

  • noun A convoluted ridge between grooves; a convolution. See brain.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun anatomy A ridge or fold on the cerebral cortex.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a convex fold or elevation in the surface of the brain

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin gȳrus, circle; see gyre.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin gȳrus ("circle"), from Ancient Greek γῦρος (guros)

Examples

  • A region of the brain known as the angular gyrus is partly responsible for the human ability to understand metaphor, according to research led by V.S. Ramachandran, director of the Center for Brain and Cognition at the University of California, San Diego.

    Spelling Reform in the Ketchup Mine

  • Such a pattern is reflected in the word's etymology: "girandole" can be traced back, by way of French and Italian, to the Latin word "gyrus," meaning "gyre" or "a circular or spiral motion or form."

    Merriam-Webster's Word of the Day

  • It also results from lesions interrupting the neural input to this left angular gyrus from the visual or calcarine cortical areas (1,

    Roger W. Sperry - Nobel Lecture

  • The paralimbic lobe is an outgrowth of the cingulate gyrus, which is known to elaborate social communication and social emotions such as feelings of separation distress and maternal intent in all other mammals.

    Mind Wide Open

  • The paralimbic lobe is an outgrowth of the cingulate gyrus, which is known to elaborate social communication and social emotions such as feelings of separation distress and maternal intent in all other mammals.

    Mind Wide Open

  • The paralimbic lobe is an outgrowth of the cingulate gyrus, which is known to elaborate social communication and social emotions such as feelings of separation distress and maternal intent in all other mammals.

    Mind Wide Open

  • The paralimbic lobe is an outgrowth of the cingulate gyrus, which is known to elaborate social communication and social emotions such as feelings of separation distress and maternal intent in all other mammals.

    Mind Wide Open

  • The area involved was found to be the third left frontal gyrus, which is often called Broca's convolution as a result.

    The Human Brain

  • The anterior part is subdivided by shallow sulci into three or four short gyri, while the posterior part is formed by one long gyrus, which is often bifurcated at its upper end.

    IX. Neurology. 4c. The Fore-brain or Prosencephalon

  • When she thought about playing tennis, the supplementary motor cortex, which is involved in planning movements, became active, but when she imagined walking through her house, the parahippocampal gyrus, which is needed for spatial navigation, was activated.

    The Guardian World News

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