Erbium

(So named in 1843 by Carl Gustaf Mosander, Swedish chemist after Ytterby, a village in Sweden where the rare earth minerals were first found) A grayish silver trivalent chemical element, one of the rare-earth metals. It is an important constituent of signal repeaters in long-distance telephone cables.

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Er"bi*um (?), n. [NL. from Ytterby, in Sweden, where gadolinite is found. Cf. Terbium, Yttrium, Ytterbium.] (Chem.)

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.

© Webster 1913

Er"bi*um (?), n. [NL. Named from Ytterby, in Sweden, where gadolinite is found. Cf. Terbium, Yttrium, Ytterbium.] (Chem.)

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.

© Webster 1913