n. 钬

[化] 钬Ho

[医] 钬(67)号元素

[ noun ]
a trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds
<noun.substance>

Holmium \Hol"mi*um\, n. [NL., from Stockholm.] (Chem.)
A rare element of atomic number 67 said to be contained in
gadolinite. Chemical symbol Ho. Atomic weight 164.93. Valence
+3. It was detected by spectral absorption bands in 1878 by
the Delafontaine and Soret, who called it "Element X". Later
the Swedish chemist Cleve independently discovered it in
erbia, and named it after his native city Stockholm. The
first preparation of pure Holmia, the yellow oxide, was not
made until 1911. --HCP61 -- {Hol"mic}, a.
[1913 Webster +PJC]