allomelaninWiktionary 原文构词拆分allo-前缀(biology, medicine) Nonself; nonself but of the same species. · External, outside, or from a separate location.+melanin词根/词干词源说明From allo- + melanin.释义（英文）名词 NounAn oxidised form of the pigment melanin present in some plants such as black oat