CORTICAL
cortical
(adjective) of or relating to a cortex
Source: WordNet® 3.1
Etymology
Adjective
cortical (not comparable)
(anatomy) Pertaining to the outer layer of an internal organ or body structure, such as the kidney or the brain.
(botany) Pertaining to the cortex of a stem or root—the tissue that lies inward from the epidermis, but exterior to the vascular tissue.
Source: Wiktionary
Cor"ti*cal (kr"t-kal), a. Etym: [L. cortex bark: cf. F. cortical.]
Definition: Belonging to, or consisting of, bark or rind; resembling bark
or rind; external; outer; superficial; as, the cortical substance of
the kidney.
Source: Webster’s Unabridged Dictionary 1913 Edition