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2 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 Di·rac /dɪˈræk/

From: WordNet (r) 2.0

 Dirac
      n : English theoretical physicist who applied relativity theory
          to quantum mechanics and predicted the existence of
          antimatter and the positron (1902-1984) [syn: Paul
           Adrien Maurice Dirac]