聚变反应 jùbiànfǎnyìng nuclear fusion Definitions Defs Origin Strokes Stroke Words Sentences Sents 聚变 聚變 jùbiàn fusion to undergo fusion; nuclear fusion or thermonuclear reaction. Also known as 核聚变 héjùbiàn or 热核反应 rèhéfǎnyìng反应 反應 fǎnyìng nounverb chemical reaction a process in which substances undergo chemical or physical change