Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A disorder characterized by smoothness (lack of folds and grooves) of the brain.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ancient Greek, smooth + brain.

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  • Lissencephaly, which literally means "smooth brain", is a rare brain formation disorder caused by defective neuronal migration during the 12th to 24th weeks of gestation resulting in a lack of development of brain folds gyri and grooves sulci.

    July 12, 2015