钍 tǔ thorium Definitions Defs Origin Strokes Stroke Words Sentences Sents 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) 釷 thorium Traditional No origin information available for this character yet. Sources Readings & variants Unicode