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

  • n. Plural of gyrus.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of gyrus.

from the GNU version of the Collaborative International Dictionary of English

  • See gyrus.

from The Century Dictionary and Cyclopedia

  • n. Plural of gyrus.


Sorry, no etymologies found.


  • Outermost, covering the entire cerebrum, is the gray matter, the cerebral cortex, an eighth-inch-thick landscape of rolling hills (known as gyri) and valleys (sulci).


  • The ridges of cerebral tissue between the sulci, which look like softly rolled matter that has been flattened out slightly by the pressure of the skull, are called gyri (j'y'ry; "rolls" L), the singular form being gyrus (jy'rus).

    The Human Brain

  • The lateral surface of the frontal lobe (Fig. 726) is tranversed by three sulci which divide it into four gyri: the sulci are named the precentral, and the superior and inferior frontal; the gyri are the anterior central, and the superior, middle, and inferior frontal.

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

  • The convex parts of the folds are called gyri (singular, gyrus).

    ScienceBlogs Channel : Life Science

  • The ridges in the cerebrum are called the gyri (gyrus)

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  • Bilateral activation in the inferior frontal and superior temporal gyri and activation in the left fusiform gyrus of girls was greater than in boys.

    Neural Dimorphism and Discrimination

  • I think the most recent time was when activity in certain areas of my brain (the claustrum, left caudate and putamen, right middle occipital/middle temporal gyri and bilateral cingulate gyrus) caused me, quite against my will, to become attracted to Susan from Narnia Episode IV (who turns out to be 17, so it's OK anyway).

    You can'ta fool me

  • They determine whether you are selecting the lobes, sulci (the 'trenches') or gyri (the 'ridges') when asking for on-screen labels.

    Mind Hacks: February 2006 Archives

  • The sulci and gyri are fairly standardized from brain to brain, and the more prominent ones are named and mapped.

    The Human Brain

  • The sense of smell has been localized by Munk in the gyri hippocampi, while the center of hearing has been demonstrated to be in the temporal lobes.

    Scientific American Supplement, No. 520, December 19, 1885


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