ytterbium
Pronunciation: i-tĕr′bē-ŭm
Definition: A metallic element of the lanthanide group; atomic no. 70, atomic wt. 173.04. 169Yb, with a half-life of 32.03 days, has been used in cisternography and in brain scans.
[Ytterby, village in Sweden]
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Examples: glitazone, GI cocktail, etc.

