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出典:Wiktionary
出典:『Wiktionary』 (2025/05/29 17:54 UTC 版)
From Ancient Greek λανθάνω (lanthánō, “to escape notice”), because it had gone long undetected in mineral ores; + -ium (“a chemical element”).
lanthanium (countable and uncountable, plural lanthaniums)
lanthanium