ytterbium
n. (வேதி.) அணு எண் ஹ்0 உடைய அரிய உலோகத் தனிமம்.
Yt*ter"bi*um, n. Etym: [NL., fr. Ytterby, in Sweden. See Erbium.] (Chem.) Defn: 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. Note: Ytterbium is associated with other rare elements, and probably has not been prepared in a pure state.