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equivalent bond yield
equivalent taxable yield
equivalent weight
equivocal
equivocate
equivocation
equivoque
Equuleus
-er (1)
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erbium
er·bi·um [ úrbee əm ]


noun 
Definition:
 
metallic chemical element: a soft silvery metallic element of the rare-earth group. Source: monazite, bastnaesite. Use: alloys, pigment.
Symbol  Er
[Mid-19th century. After Ytterby, town in Sweden]
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