leprechaunism
noun
lep·re·chaun·ism
| \ ˈlep-rə-ˌkän-ˌiz-əm, -ˌkȯn-
\
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Medical Definition of leprechaunism
: a rare inherited disorder characterized by mental and physical retardation, by endocrine disorders, by hirsutism, and especially by a facies marked by large wide-set eyes and large low-set ears