ytterbite
— Navneord
– Engelsk
~ a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
ytterbium
— Navneord
– Engelsk
~ a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime