cerebral cortex Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. the layer of unmyelinated neurons the grey matter forming the cortex of the cerebrum Example Sentence The cerebral cortex is responsible for higher brain functions. Synonyms cerebral mantle; pallium; cortex Antonyms toe Hear It! Say It! Write It! cerebral cortex Switch to cursive Start Share with your friends: