| 释义 |
lan·tha·num AHD[lănʹthə-nəm] D.J.[ˈlænθənəm]K.K.[ˈlænθənəm]n.Symbol La （名词）符号 La - A soft, silvery-white, malleable, ductile, metallic rare-earth element, obtained chiefly from monazite and bastnaesite and used in glass manufacture and with other rare earths in carbon lights for movie and television studio lighting. Atomic number 57; atomic weight 138.91; melting point 920°C; boiling point 3,469°C; specific gravity 5.98 to 6.186; valence 3. See table at element 镧：一种质软、银白色、有延展性的、可塑性的稀有金属，主要是从独居石和氟碳铈矿中提取出来，用于玻璃工业及电影或电视摄影照明的碳棒灯中。原子序数57；原子量138.91；熔点920°C；沸点3,496°C；比重5.98到6.186；原子价3 参见 element
- New Latin 新拉丁语
- from Greek lanthanein [to escape notice (from the finding of the element hidden in oxide of cerium)] 源自 希腊语 lanthanein [避开注意力（指不被从铈氧化物元素中提取）]
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