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Definition of Gyrus
1. Noun. A convex fold or elevation in the surface of the brain.
Exact synonyms: Convolution
Generic synonyms: Anatomical Structure, Bodily Structure, Body Structure, Complex Body Part, Structure
Specialized synonyms: Frontal Gyrus, Temporal Gyrus, Parietal Gyrus, Occipital Gyrus, Central Gyrus
Group relationships: Cerebrum
Generic synonyms: Anatomical Structure, Bodily Structure, Body Structure, Complex Body Part, Structure
Specialized synonyms: Frontal Gyrus, Temporal Gyrus, Parietal Gyrus, Occipital Gyrus, Central Gyrus
Group relationships: Cerebrum
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. 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)