Chem. [mod. Lat., f. last two syllables of Ytterby, the locality of gadolinite, in which it occurs.] One of the three earths formerly confounded under the general name YTTRIA.
1869. ‘Urban,’ in Eng. Mech., 10 Dec., 303/3. Erbia … is a brown powder, discovered by Mosander, 25 years back, in gadolinite.
1873. Watts, Fownes’ Chem., 348. Erbia … obtained by ignition of erbium nitrate or oxalate, has a faint rose color.
