What does xeroderma pigmentosum mean?
• XERODERMA PIGMENTOSUM (noun) The noun XERODERMA PIGMENTOSUM has 1 sense: 1. a rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair processes are defective so they are more likely to chromosome breaks and cancers when exposed to ultraviolet light Familiarity information: XERODERMA PIGMENTOSUM used as a noun is very rare.