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holmium

[hohl-mee-uh m] /ˈhoʊl mi əm/
noun, Chemistry
1.
a rare-earth, trivalent element found in gadolinite. Symbol: Ho; atomic weight: 164.930; atomic number: 67.
Origin
< Neo-Latin (1879), equivalent to Holm(ia) Stockholm + -ium -ium
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for holmium

holmium

/ˈhɒlmɪəm/
noun
1.
a malleable silver-white metallic element of the lanthanide series. Symbol: Ho; atomic no: 67; atomic wt: 164.93032; valency: 3; relative density: 8.795; melting pt: 1474°C; boiling pt: 2700°C
Word Origin
C19: from New Latin Holmia Stockholm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for holmium
n.

rare earth element, named by French chemist Lecoq de Boisbaudran (1838-1912) in 1886, from holmia "holmium oxide," a Modern Latin word coined by the earth's discoverer, Swedish chemist Per Teodor Cleve (1840-1905), in 1879 from Holmia, Latin name of Stockholm.

Online Etymology Dictionary, © 2010 Douglas Harper
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holmium in Medicine

holmium hol·mi·um (hōl'mē-əm)
n.
Symbol Ho
A soft malleable rare-earth element. Atomic number 67; atomic weight 164.930; melting point 1,472°C; boiling point 2,700°C; specific gravity 8.80; valence 3.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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holmium in Science
holmium
  (hōl'mē-əm)   
Symbol Ho
A soft, silvery, malleable metallic element of the lanthanide series. Its compounds are highly magnetic. It is mainly used in scientific research but has also been used to make electronic devices. Atomic number 67; atomic weight 164.930; melting point 1,461°C; boiling point 2,600°C; specific gravity 8.803; valence 3. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for holmium

(Ho), chemical element, rare-earth metal of the lanthanoid series of the periodic table, one of the most paramagnetic substances known. Among the least abundant of the rare-earth elements, holmium and its compounds have limited application except for research. Holmium has been used as a component of some electronic devices; the ion Ho3+ has been used as a catalyst for ortho-para hydrogen conversion; and the oxide has been used as a special refractory.

Learn more about holmium with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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