holmium(redirected from Newtonium)
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n. Symbol Ho
A relatively soft, lustrous, malleable element of the lanthanide series, with unusual magnetic properties including the highest magnetic moment of any naturally occurring element, found in minerals such as gadolinite and monazite. Atomic number 67; atomic weight 164.930; melting point 1,462°C; boiling point 2,700°C; specific gravity 8.795; valence 3. See Periodic Table.
[After Holmia (Stockholm), Sweden.]
(Elements & Compounds) 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
[C19: from New Latin Holmia Stockholm]
hol•mi•um(ˈhoʊl mi əm)
a rare-earth, trivalent element found in gadolinite. Symbol: Ho; at. wt.: 164.930; at. no.: 67.
[1879; < New Latin, Medieval Latin Holm(ia) Stockholm (near where gadolinite and other rare-earth minerals are found) + -ium2]
Symbol Ho A soft, silvery, easily shaped metallic element of the lanthanide series. When exposed to a magnetic field, holmium becomes highly magnetic. It is mainly used in scientific research but has also been used to make electronic devices. Atomic number 67. See Periodic Table.
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|Noun||1.||holmium - a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds|
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.