- 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. [G. gyros, ring (gyrus), + enkaphale, brain]
* * *gy·ren·ce·phal·ic (ji″rən-sə-falґik) having cerebral hemispheres marked by convolutions, such as normally occurs in humans and some other animals. Cf. lissencephalic.
Medical dictionary. 2011.