noun
China syndrome
A hypothetical nuclear reactor meltdown scenario where the core melts through the containment and into the earth, supposedly toward China. Used in technical and popular contexts.
チャイナシンドロームは、原子炉の炉心溶融が地面を貫通するという仮想的な事故シナリオだ。
The China syndrome is a hypothetical accident scenario in which a nuclear reactor core meltdown penetrates the ground.
Variant with a middle dot; less common but still seen.
Borrowed from English 'China syndrome', a term coined in the 1970s for a hypothetical worst-case nuclear meltdown scenario.