noun. a type of cognitive retardation correlated with asymmetrical physical growth and frequently characterized by an irregularly small brain, nervous-system abnormalities, and a lesser resistance to illness. Commonly referred to as oligocephaly.
Cite this page: N., Sam M.S., "OLIGOENCEPHALY," in PsychologyDictionary.org, April 7, 2013, https://psychologydictionary.org/oligoencephaly/ (accessed February 5, 2023).