rare earth

名词 n.
中文释义

英文释义

名词 n.
  1. Any of the naturally occurring oxides of the lanthanide metals; they are widely distributed in relatively small concentrations and are used in glassmaking, ceramic glazes etc.
    — Meronyms: rare earth element, rare earth metal
  2. A rare earth element.
    — Near-synonym: lanthanide

词形变化

rare earths plural

词源

From rare + earth. First use appears c. 1841 in the publications of Henry Minchin Noad. See cite below.
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