cortex Meaning, Definition & Usage

  1. noun the layer of unmyelinated neurons (the grey matter) forming the cortex of the cerebrum
    pallium; cerebral cortex; cerebral mantle.
  2. noun the tissue forming the outer layer of an organ or structure in plant or animal
  3. noun the tissue that surrounds the lens nucleus
    lens cortex.

WordNet

Cor"tex noun
Etymology
L., bark. Cf. Cork.
Wordforms
plural Cortices
Definitions
  1. Bark, as of a tree; hence, an outer covering.
  2. (Med.) Bark; rind; specifically, cinchona bark.
  3. (Anat.) The outer or superficial part of an organ; as, the cortex or gray exterior substance of the brain.

Webster 1913