erbium, n.
(erbia)
(erbia)
a trivalent metallic element of the rare earth group; occurs with yttrium
<noun.substance>
Er atomic number 68 erbium
semantic pointers
hypernym
substance holonym
Word
a trivalent metallic element of the rare earth group; occurs with yttrium
<noun.substance>
Er atomic number 68 erbium