Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for erbium from the 1913 edition of Webster's Revised Unabridged Dictionary. Define erbium using one of the most comprehensive free online dictionaries on the web.

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erbium
Part of Speech: noun
Results: 2
1. A rare metallic element associated with several other rare elements in the mineral gadolinite from Ytterby in Sweden. Symbol Er. Atomic weight 165. 9. Its salts are rose- colored and give characteristic spectra. Its sesquioxide is called erbia.
2. A metallic element of the rare earth group, found in gadolinite and some other minerals. Symbol, Er; at. wt. 167. 4. Its salts are rose- colored and give characteristic spectra.
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