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2 definitions found

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 Yb 符號

From: WordNet (r) 2.0

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