The term 'SKIN' can be broken down into three prefixes: dermo, DERMA, and derm. Dermo is a five letter prefix derived from the Greek word 'DERMA, ' meaning SKIN. DERMA is also a five letter prefix derived from the Greek word 'DERMA, ' but it is used to refer to the outer layer of the SKIN. Lastly, derm is a four letter prefix derived from the Greek word 'DERMA, ' and it is used to refer to the tissue layer beneath the epidermis. All three prefixes are related to the term 'SKIN, ' and they are often used in medical terminology.