What is "keratinocyte"

n. (context biology English) A cell in the epidermis that produces keratin

A keratinocyte is the predominant cell type in the epidermis, the outermost layer of the skin, constituting 90% of the cells found there. Those keratinocytes found in the basal layer ( stratum basale) of the skin are sometimes referred to as "basal cells" or "basal keratinocytes".