1. a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys; [syn: yttrium, Y, atomic number 39]
WordNet (r) 3.0 (2006):
atomic number 39
n 1: a silvery metallic element that is common in rare-earth
minerals; used in magnesium and aluminum alloys [syn:
yttrium, Y, atomic number 39]