[1] : The Collaborative International Dictionary of English v.0.48

cortex \cor"tex\ k^or"te^ks, n.; pl. cortices -t?-s?z.
   l., bark. cf. cork.
   1. bark, as of a tree; hence, an outer covering.
      1913 webster

   2. med. bark; rind; specifically, cinchona bark.
      1913 webster

   3. anat. the outer or superficial part of an organ; as, the
      cortex or gray exterior substance of the brain.
      1913 webster
see also:
cortices cork 

[2] : WordNet (r) 2.0

cortex
     n 1: the layer of unmyelinated neurons the gray matter forming
          the cortex of the cerebrum syn: cerebral cortex, cerebral
          mantle, pallium
     2: the tissue forming the outer layer of an organ or structure
        in plant or animal ant: medulla
     also: cortices pl
see also:
cerebral cortex cerebral mantle pallium medulla cortices 

[3] : Moby Thesaurus II by Grady Ward, 1.0

67 moby thesaurus words for "cortex":
   armature, armor, armor plate, bark, body armor, border, buckler,
   bulletproof vest, chain armor, chain mail, chitin, circumference,
   coat of mail, cork, covering, crust, elytron, envelope, epicarp,
   epidermis, episperm, exterior, external, facade, face, facet,
   fringe, front, habergeon, harness, hauberk, integument, lineaments,
   lorica, lorication, mail, needles, outer face, outer layer,
   outer side, outer skin, outline, outside, panoply, peel, peeling,
   pericarp, periphery, phellum, plate, plate armor,
   protective covering, rind, scute, scutum, shell, shield, skin,
   spines, suit of armor, superficies, superstratum, surface, test,
   testa, thick skin, top

[4] : The Free On-line Dictionary of Computing (27 SEP 03)

cortex
     
        an experimental slow controls project at cern.
     
        1994-11-30
     
     
see also:
cern 

Cortex >> C Words
Cortex, definition of term: Cortex
cortex_pag1.html

Visual Cortex >> V Words
Visual Cortex, definition of term: Visual Cortex
visual+cortex_pag1.html

Motor Cortex >> M Words
Motor Cortex, definition of term: Motor Cortex
motor+cortex_pag1.html

Cerebral Cortex >> C Words
Cerebral Cortex, definition of term: Cerebral Cortex
cerebral+cortex_pag1.html