Latin corium, from Greek chórion - skin.

Corium - the skin proper, a loose connective tissue layer underlying the epidermis.

The inner fibrous layer of the skin, the corium (cutis), or skin proper, develops from the mesodermal embryo, the dermal leaflet of the somite. The layer of the corium is thick, it forms the main part of the skin, which has great strength. In the corium develop a variety of ossification in the form of fish scales, cover bones that form the skin skeleton.