[The King of Queens] `China Syndrome` is the series finale of the long-running American sitcom The King of Queens. The finale has the length of two regular episodes, being counted as the twelfth and thirteenth episodes of the ninth season, running about 45 minutes without commercials. It was taped March 15, 2007; it originally aired on May ...
Found on
http://en.wikipedia.org/wiki/China_Syndrome_(The_King_of_Queens)

<radiobiology> American jargon/slang for a nuclear fission meltdown accident (see meltdown) in which the molten nuclear core heats and melts the ground beneath it, thus sinking into the earth, and heading towards China (which is roughly on the opposite side of the globe). ... (09 Oct 1997) ...
Found on
http://www.encyclo.co.uk/local/20973

a hypothetical nuclear-reactor accident in which the fuel would melt through the floor of the containment structure and burrow into the earth.
Found on
https://www.infoplease.com/dictionary/china-syndrome
No exact match found.