myotonia acquisita
/mʌɪə(ʊ)ˌtəʊnɪə əˈkwɪzɪtə/Medicine. Now historical
noun
A (supposed) form of myotonia acquired after injury or disease (rather than inherited).
Origin
Early 20th century; earliest use found in Journal of Nervous and Mental Disease. From scientific Latin myotonia acquisita from myotonia + acquisita acquired, feminine of classical Latin acquīsītus, past participle of acquīrere.