noun
Historical colloquial term for cholera, literally 'three-day drop-dead', from the belief that one could die within three days of contracting the disease. Now only used in historical or educational contexts.
See also: コレラ
江戸時代、コレラは「三日コロリ」と呼ばれて恐れられた。
In the Edo period, cholera was feared and called 'mikka korori' (three-day drop-dead).
Modern medical term for cholera; 三日コロリ is the historical, colloquial nickname.
From 三日 (three days) and コロリ (adverb meaning 'suddenly dropping dead'), reflecting the rapid fatal progression of cholera before modern treatment.