mucopolysaccharidosis
/ˌmjuːkəʊˌpɒlɪˌsakərʌɪˈdəʊsɪs/Pathology
noun
Any of a group of inherited metabolic disorders in which mucopolysaccharides accumulate in various tissues, often leading to skeletal abnormalities, mental retardation, and reduced life expectancy.
Origin
1950s. From mucopolysaccharide + -osis.