n, pl  cor*ti*ces  or  cor*tex*es  1 a  :  the outer or superficial part of an organ or body structure (as the kidney, adrenal gland, or a hair) : esp  :  the outer layer of gray matter of the cerebrum and cerebellum  b  :  the outer part of some organisms (as paramecia)  2 a  :  a plant bark or rind (as cinchona) used medicinally  b  :  the peel of any of several fruits - used esp. in the writing of medical prescriptions .
 
 
 
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