Terbium Definition
tûrbē-əm
noun
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
Synonyms:
- 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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