Terbium Definition

A soft, silvery-gray metallic rare-earth element, extracted chiefly from monazite, used in high-temperature fuel cells as a stabilizer and in alloys responsive to a magnetic field. Terbium oxide provides an important phosphor in cathode-ray tubes and low-energy lighting applications. Atomic number 65; atomic weight 158.925; melting point 1,356°C; boiling point 3,230°C; specific gravity 8.230; valence 3, 4.
American Heritage
A soft, silver-gray, ductile chemical element, one of the rare-earth elements, found in gadolinite and other minerals: symbol, Tb; at. no. 65
Webster's New World
  • atomic number 65
  • tb

Origin of Terbium

  • After Ytterby , a town in Sweden

    From American Heritage Dictionary of the English Language, 5th Edition

  • After Ytterby, Sweden.

    From Wiktionary

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