terbium

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Definition of terbium in English English dictionary: a metallic chemical element (symbol Tb) with an atomic number of 65; {i} chemical element; Atomic weight 150; Symbol Tr or Tb; a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite; A rare metallic element, of uncertain identification, supposed to exist in certain minerals, as gadolinite and samarskite, with other rare ytterbium earth
terbium oxide: Any oxide of terbium, but especially the white solid Tb2O3 (terbia)
terbium metal: Any of several rare-earth metals separable from other metals as a group and including europium, terbium, and gadolinium
terbium metal: a separate group of related lanthanides, including terbium, europium, gadolinium, and sometimes dysprosium

terbium

Hyphenation

ter·bi·um

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