'Ytterbium' definitions:

Definition of 'ytterbium'

(from WordNet)
noun
A soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime [syn: ytterbium, Yb, atomic number 70]

Definition of 'Ytterbium'

From: GCIDE
  • Ytterbium \Yt*ter"bi*um\, n. [NL., fr. Ytterby, in Sweden. See Erbium.] (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. [1913 Webster]
  • Note: Ytterbium is associated with other rare elements, and probably has not been prepared in a pure state. [1913 Webster]

Definition of 'ytterbium'

From: Elements
  • Symbol: Yb
  • Atomic number: 70
  • Atomic weight: 173.04
  • Silvery metallic element of the lanthanoids. Seven natural isotopes and ten artificial isotopes are known. Used in certain steels. Discovered by J.D.G. Marignac in 1878.