Ytterbium

n.

1.

(Chem.) A rare element of the boron group, sometimes associated with yttrium or other related elements, as in euxenite and gadolinite. Symbol Yb; provisional atomic weight 173.2. Cf. Yttrium.

Noun

1.

ytterbium - a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime Synonyms: atomic number 70, Yb

atomic number 70, gadolinite, metal, metallic element, monazite, xenotime, Yb, ytterbite