来自古希腊语 Thule,传说中的极北之地，可能为现瑞典，-ium,金属元素后缀。该金属元素由 其发现者 19 世纪瑞典化学家 Per Teodor Cleve 命名。
英文词源
thulium (n.)
1879, Modern Latin, from thulia (thulite), name of an earth found in Scandinavia, from which the element was identified in 1879 by Swedish geologist Per Tedor Cleve (1840-1905), from Thule, which sometimes was identified as Scandinavia.
实用例句
1. The elements which have been studied most are those from gadolinium to thulium.
研究得最多的是从钆到铥之间的元素.
来自辞典例句
2. Polymetallicacetate is a kind of polynuclear metal complex with aluminum and thulium.