Atomic_number_39WordNet Explorer

a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys

any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.

a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium

a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals

a brown-to-yellow mineral that is a phosphate of yttrium in crystalline form