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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - A ductile grey metallic element of the lanthanide series.

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Usage examples (31)
  • Rare earth elements such as cerium are components of the strongest known magnets.
  • But those deposits are skewed toward "light" rare earths such as cerium and lanthanum, while
  • Manganese, iron, cerium, or zirconium can be used in paint driers.
  • The process activated the cerium oxalate to reveal the hidden text.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.