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Definitions:
Noun
xeroderma pigmentosum
Definition: 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
Definition: A rare genetic disorder in which DNA damaged by ultraviolet light is not repaired and the skin becomes sensitive to such light; a skin cancer that can subsequently develop