Word Study
Terbium
CIDE DICTIONARY
Terbium, n. [NL., fr. Ytterby, in Sweden. See Erbium.].
A rare metallic element, found in certain minerals, as gadolinite and samarskite, with other rare earths such as ytterbium. Symbol Tb. Atomic number 65. Atomic weight 158.925. [1913 Webster]
OXFORD DICTIONARY
Terbium, n. Chem. a silvery metallic element of the lanthanide series.
Usage
Symb.: Tb.
Etymology
mod.L f. Ytterby in Sweden
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