ytterbium.
(From Ytterby, population Sweden).
1. m. chemical element of no. atóm. 70. Very low in the Earth's crust rare-earth metal, is located in certain minerals with yttrium. Its salts are colorless and its electrical conductivity depends on pressure; some of its derivatives are used in the electronics industry, the glass and as catalysts. (Símb.) Yb).
