Read Edit View history 釷 tǔ thorium Origin Definitions Defs Strokes Stroke Words Sentences Sents No origin information available for this character yet. Sources Readings & variants Unicode 钍 tǔ thorium Simplified Components 钅 钅 Meaning component jīn metal metal 土 土 Sound component tǔ earth 說文解字 置也。从宀眞聲。 Sources Readings & variants Unicode Etymology Shuowen Jiezi (說文解字)