| 单词 | xeroderma pigmentosum | 
| 释义 | xeroderma pig·men·to·sum   (pĭg′mən-tōsəm) n.  A rare hereditary skin disorder caused by a defect in the enzymes that repair DNA damaged by ultraviolet light. [New Latin xēroderma pigmentōsum : xēroderma, xeroderma + pigmentōsum, neuter of pigmentōsus, of pigment.] | 
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