Holmium Definition
hōlmē-əm
noun
A relatively soft, lustrous, malleable rare-earth element, with unusual magnetic properties including the highest magnetic moment of any naturally occurring element, found in gadolinite, monazite, and other rare-earth minerals. Atomic number 67; atomic weight 164.930; melting point 1,462°C; boiling point 2,700°C; specific gravity 8.795; valence 3.
American Heritage
A trivalent, silvery chemical element, one of the rare-earth elements: symbol, Ho; at. no. 67
Webster's New World
Synonyms:
- atomic number 67
- ho
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