[mod.Lat., f. ERBIA, as sodium f. soda, etc.] The metallic radical of erbia.
1843. Chemist, I. 446. [Mosander’s] close examination of Yttria has led him to discover … two oxides, to which he has given the names terbium and erbium.
1873. Watts, Fownes’ Chem., 382. Erbium and yttrium, are again precipitated by oxalic acid.
