Outer Layer of the Cerebrum
This page is the CodyCross answer for the clue below from Past and Present Tech, Group 1446, Puzzle 3 (Gramophones).
Question is: Outer Layer of the Cerebrum
and the answer is: CORTEX
Word Meaning:
CORTEX — (countable, anatomy) The outer layer of an internal organ or body structure, such as the kidney or the brain.
Definitions from Wiktionary.