Definition of Gyrus

1. Noun. A convex fold or elevation in the surface of the brain.

Definition of Gyrus

1. n. A convoluted ridge between grooves; a convolution; as, the gyri of the brain; the gyri of brain coral. See Brain.

Definition of Gyrus

1. Noun. (anatomy) A ridge or fold on the cerebral cortex. ¹

¹ Source:

Definition of Gyrus

1. a ridge in the brain [n -RI]

Medical Definition of Gyrus

1. One of the prominent rounded elevations that form the cerebral hemispheres, each consisting of an exposed superficial portion and a portion hidden from view in the wall and floor of the sulcus. Origin: L. Fr. G. Gyros, circle Angular gyrus, a folded convolution in the inferior parietal lobule formed by the union of the posterior ends of the superior and middle temporal gyri. Synonym: gyrus angularis, angular convolution. (05 Mar 2000)

Lexicographical Neighbors of Gyrus

gyrus (current term)
gyrus angularis
gyrus cinguli
gyrus dentatus
gyrus fasciolaris
gyrus frontalis inferior
gyrus frontalis medius
gyrus frontalis superior
gyrus fusiformis
gyrus lingualis
gyrus longus insulae
gyrus occipitotemporalis lateralis
gyrus occipitotemporalis medialis

Literary usage of Gyrus

Below you will find example usage of this term as found in modern and/or classical literature:

1. Brain and Spinal Cord: A Manual for the Study of the Morphology and Fibre by Emil Villiger (1918)
"The gyrus hippocampi proceeds forward, becomes broader and, at the level of ... On its outer side, the gyrus hippocampi is bounded by the common stem of the ..."

2. The Encyclopaedia Britannica: A Dictionary of Arts, Sciences, Literature and (1910)
"9, p* and p*), which separates the gyrus of the parietal eminence from the supra- parietal lobule. part in front of the junction ¡stalled ..."

3. The Century Dictionary: An Encyclopedic Lexicon of the English Language by William Dwight Whitney (1889)
"Angular gyms, a certain gyrus of the hemisphere of the Drain in man nnd ... Ascending frontal gyrus, the gyrus bounding the fissure of Rolando in front. ..."

4. Anatomy, Descriptive and Applied by Henry Gray (1913)
"posterior sulcus, the paramedial sulcus, which, however, is frequently interrupted by bridging gyri. The middle frontal gyrus (gyrus frontalis medius; ..."

5. Anatomy: Descriptive and Surgical by Henry Gray, Thomas Pickering Pick (1897)
"The hippocampal convolution is the downward and forward prolongation, on the mesial surface of the temporal lobe, of the gyrus ..."

6. The American Journal of the Medical Sciences by Southern Society for Clinical Investigation (U.S.) (1892)
"Abscess in left angular gyrus was diagnosticated, and Mr. Horsley operated. He found fracture of skull with necrosis corresponding to scar. ..."

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