Denoting brains, such as that of humans, in which the cerebral cortex has convolutions, in contrast to the lissencephalic (smooth) brains of small mammals such as the rodents. ... Origin: G. Gyros, ring (gyrus), + enkaphale, brain ... (05 Mar 2000) ... 
(ji″rәn-sә-fal´ik) pertaining to the Gyrencephala. having cerebral hemispheres marked by convolutions.
Type: Term Pronunciation: jī′ren-sĕ-fal′ik Definitions: 1. Denoting brains, such as that of humans, in which the cerebral cortex has convolutions, in contrast to the lissencephalic (smooth) brains of small mammals (rodents).
gyrencephalic Referring to the presence of convolutions in the cerebral cortex.
when the cerebral cortex is highly folded and convuluted (due to gyri and sulci)