ˈhō(l)mēəm noun
( -s )
Etymology: New Latin, from Holmia (latinized form of Stockholm, Sweden) + New Latin -ium; from the locality near which minerals rich in yttrium are found
: a trivalent metallic element of the rare-earth group that occurs with yttrium (as in gadolinite) and that forms cream-colored or yellow compounds which are among the most highly magnetic known — symbol Ho ; see element table