Erbium

[ә:biәm]

Definition

(noun.) a trivalent metallic element of the rare earth group; occurs with yttrium.

Checker: Nona--From WordNet

Definition

(n.) 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.

Inputed by Gustav

Definition

n. a rare metal the compounds of which are present in the mineral gadolinite found at Ytterby in Sweden.

Checked by Hillel