¹ Source: wiktionary.com
Medical Definition of Pheomelanin
1. A type of melanin found in red hair; it contains sulfur and is alkali-soluble; elevated levels are found in the rufous type of oculocutaneous albinism. Compare: eumelanin. Origin: G. Phaios, dusky, + melos (melan-), black (05 Mar 2000)