Source : Webster's Revised Unabridged Dictionary (1913)

Corium \Co"ri*um\ (k?"r?-?m), n. [L. corium leather.]
   1. Armor made of leather, particularly that used by the
      Romans; used also by Enlish soldiers till the reign of
      Edward I. --Fosbroke.

   2. (Anat.)
      (a) Same as {Dermis}.
      (b) The deep layer of mucous membranes beneath the
          epithelium.

Source : WordNet®

corium
     n : the deep vascular inner layer of the skin [syn: {dermis}, {derma}]
     [also: {coria} (pl)]