agyria

noun

agy·​ria ˌā-ˈjī-rē-ə 

medical

: severe lissencephaly marked by the absence of cerebral convolutions

broadly : lissencephaly compare pachygyria

Word History

Etymology

a- entry 2 + gyrus + -ia entry 1

First Known Use

1933, in the meaning defined above

Medical Definition

agyria

noun

agy·​ria ˌā-ˈjī-rē-ə 

: severe lissencephaly marked by the absence of cerebral convolutions

broadly : lissencephaly compare pachygyria