erbium
(ˈɜːbɪəm)
[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. |