Definition of ytterbium noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ɪˈtɜːbiəm//
; NAmE NAmE//ɪˈtɜːrbiəm//
[uncountable] (symbol Yb)
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a chemical element. Ytterbium is a silver-white metal used to make steel stronger and in some X-ray machines. Word Originlate 19th cent.: modern Latin, from Ytterby, the name of a Swedish quarry where it was first found.
See the Oxford Advanced American Dictionary entry: ytterbium