Yttrium

n.

1.

(Chem.) A rare metallic element of the boron-aluminium group, found in gadolinite and other rare minerals, and extracted as a dark gray powder. Symbol Y. Atomic number 39. Atomic weight, 88.9.

Noun

1.

yttrium - a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys Synonyms: atomic number 39, Y

atomic number 39, fergusonite, gadolinite, metal, metallic element, xenotime, Y, ytterbite