炉心溶融 ろしんようゆう Also written 炉心熔融 Meanings Noun core meltdown; meltdown; nuclear reactor core meltdown Kanji 炉 furnace. Read as ロ. 心 heart. Read as シン. 溶 melt. Read as ヨウ. 融 fuse. Read as ユウ. Jinuma: Japanese Dictionary · Word lists