Cortex
/ˈkɔːr.tɛks/noun
The outer layer of an organ or structure, especially the brain.
Did you know?In ancient times, the term 'cortex' was associated with the protective bark of trees, symbolizing the outer defense of the mind and spirit.
Etymological Timeline
Proto-Indo-European
PIE
*kerd-
“to be hard or to take shape, relating to outer coverings.”
Latin
Latin
cortex
“bark of a tree, outer covering.”
Medieval Latin
Medieval Latin
cortex
“the outer layer or covering.”
17th Century
English
cortex
“used in anatomical terms to refer to the outer layer of biological structures.”
Modern English
English
cortex
“the outer layer of the brain or any organ.”