Definition of erbium
: a metallic element of the rare-earth group — see element table
Recent Examples of erbium from the Web
The beam excites the erbium atoms, which then add their energy to optical data signals passing through the fiber and boost the signals' power enough to carry them 50 miles or more before needing another boost.
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Origin and Etymology of erbium
New Latin, from Ytterby, Sweden
First Known Use: 1843See Words from the same year
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