核聚变 héjùbiàn nuclear fusion / nucleosynthesis Origin Definitions Defs Strokes Stroke Words Sentences Sents 核 hé noun nuclear (bound form) relating to the nucleus of an atom; nuclear power or weaponry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