Medical Definition of storage disease
: the abnormal accumulation in the body of one or more specific substances and especially substances (such as cerebrosides in Gaucher disease) that are normally broken down by the body … a lysosomal storage disease in which cystine accumulates intracellularly in many tissues, including the kidney.—Barbara C. Sonies et al., The New England Journal of Medicine, 30 Aug. 1990—called also thesaurosis; see glycogen storage disease, lipofuscinosis
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