|
noun Ytterbium n. (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. Note: Ytterbium is associated with other rare elements, and probably has not been prepared in a pure state.
Collaborative International Dictionary of English 0.48
| 
