¹ Source: wiktionary.com
Medical Definition of Keratinocytes
1. Epidermal cells which synthesise keratin and undergo characteristic changes as they move upward from the basal layers of the epidermis to the cornified (horny) layer of the skin. Successive stages of differentiation of the keratinocytes forming the epidermal layers are basal cell, spinous or prickle cell, and the granular cell. (12 Dec 1998)