‖Cor″tex (k?r″t?ks), n.; pl.Cortices (–t�–s�z). [L., bark. Cf. Cork.] 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.