keratinocytes

n. main cell of the epidermis that makes up approximately 90% of epidermal cells

The keratinocyte is the major cell type of the epidermis, making up about 90% of epidermal cells. The epidermis is divided into four or five layers (depending on the type of skin) based on keratinocyte morphology:stratum basale (at the junction with the dermis)stratum spinosumstratum granulosumstratum lucidum (only present in thick skin - i.e. palms of hand and soles of feet)stratum corneum
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n. keratinocyte, skin cell that produces keratin