noun. a brain malformation wherein the convolutions of the cerebral cortex are irregularly thick. It is generally joined by a lessening of the fissures between the gyri. Commonly referred to as macrogyria.

PACHYGYRIA: "It appears as though pachygyria is the cause of Brent's seizures- epilepsy has not been ruled out yet either."
Cite this page: N., Sam M.S., "PACHYGYRIA," in, April 7, 2013, (accessed October 22, 2021).