Search Result for "atomic number 21":
Wordnet 3.0

NOUN (1)

1. a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite;
[syn: scandium, Sc, atomic number 21]



WordNet (r) 3.0 (2006):

atomic number 21
    n 1: a white trivalent metallic element; sometimes classified in
         the rare earth group; occurs in the Scandinavian mineral
         thortveitite [syn: scandium, Sc, atomic number 21]