nuclear reactor core
Technical term for the central part of a nuclear reactor where the nuclear reaction takes place.
事故で炉心が損傷した。
The reactor core was damaged in the accident.
After the earthquake, the workers desperately tried to cool the reactor core.
炉心の温度が上昇している。
The temperature of the reactor core is rising.
If cooling water is insufficient, the temperature of the reactor core rises sharply.
nuclear core meltdown; meltdown
emergency core cooling system; ECCS
Compound of 炉 (furnace, reactor) and 心 (heart, center).