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Noun
1. erbium (Er)
Wikipedia definition
2. ErbiumErbium is a chemical element in the lanthanide series, with the symbol Er and atomic number 68. A silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements on Earth. As such, it is a rare earth element which is associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden.
Read “Erbium” on English Wikipedia
Read “エルビウム” on Japanese Wikipedia
Read “Erbium” on DBpedia

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