Definitions for "neocortex"
The cortical part of the neencephalon; the most recently evolved part of the cerebral cortex of the brain of higher animals, and the site of most of the higher brain functions; called also neopallium.
The outermost, convoluted layer of the forebrain, often referred to merely as the cortex.
Often seen as the hallmark of human intelligence related to higher level thinking processes, such as language and reasoning.