Množina: holmia

ETYM New Lat., of uncertain origin.
Silvery, metallic element of the lanthanide series, symbol Ho, atomic number 67, atomic weight 164.93. It occurs in combination with other rare-earth metals and in various minerals such as gadolinite. Its compounds are highly magnetic.
The element was discovered in 1878, spectroscopically, by the Swiss chemists L Soret and Delafontaine, and independently in 1879 by Swedish chemist Per Cleve (1840–1905), who named it after Stockholm, near which it was found.
A trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds; SYN. Ho, atomic number 67.