English dictionary
atomic number 63
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
-
a bivalent and trivalent metallic element of the rare earth group
Source: WordNet 3.0
English dictionary
Definitions, examples, synonyms and antonyms from WordNet 3.0.
a bivalent and trivalent metallic element of the rare earth group
Source: WordNet 3.0