lanthanum

名词 n.
中文释义
发音 lăn'thənəm

英文释义

名词 n.
  1. A chemical element (symbol La) with an atomic number of 57: a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air. uncountable
  2. An atom of this element. countable

词形变化

lanthanums plural lantanium alternative lanthanium alternative

词汇关系

近义词
La
衍生词
dilanthanum lanthanian lanthanum carbonate lanthanum chloride lanthanum glass lanthanum nitrate lanthanum oxide lanthanum oxybromide lanthanum sesquioxide organolanthanum radiolanthanum
相关词
lanthana lanthanate lanthanide lanthanite lanthanoid lanthanon Fosrenol rare earth

词源

From Ancient Greek λανθάνω (lanthánō, “to escape notice”) + -um (“a chemical element”), because it had gone long undetected in mineral ores.
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