Wordnet angielsko-polski 
                        (a trivalent metallic element of the rare earth group
occurs together with yttrium
forms highly magnetic compounds) 
holm, Ho 
synonim: holmium
synonim: atomic number 67
(a trivalent metallic element of the rare earth group
occurs together with yttrium
forms highly magnetic compounds) 
holm, Ho 
synonim: holmium
synonim: atomic number 67