English dictionary
atomic number 71
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
-
a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
Source: WordNet 3.0
English dictionary
Definitions, examples, synonyms and antonyms from WordNet 3.0.
a trivalent metallic element of the rare earth group; usually occurs in association with yttrium
Source: WordNet 3.0