热核反应堆 rèhéfǎnyìngduī thermonuclear reactor Origin Definitions Defs Strokes Stroke Words Sentences Sents 热核 熱核 rèhé thermonuclear thermonuclear; relating to or using nuclear reactions that occur only at very high temperatures反应堆 反應堆 fǎnyìngduī reactor A device used to initiate and control a nuclear reaction to produce energy; short for 原子核反应堆 yuánzǐhéfǎnyìngduī.