terbium
/ˈtɝ.bi.əm/ noun
- noun (chemistry) A metallic chemical element (symbol Tb) with an atomic number of 65: a soft, silvery-white, rare earth metal that is malleable and ductile.
- noun (countable) An atom of this element.
Synonyms
Etymology
From Ytterby + -ium, named after Ytterby, Sweden. Doublet of erbium, ytterbium, and yttrium
Webster’s 1913
- noun A rare metallic element, of uncertain identification, supposed to exist in certain minerals, as gadolinite and samarskite, with other rare ytterbium earth. Symbol Tr or Tb. Atomic weight 150.
Etymology [NL., fr. Ytterby, in Sweden. See Erbium.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “terbium”, CC BY-SA 4.0. Details