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2 definitions found

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

 Hip·par·chus /hɪˈpɑrkəs/

From: WordNet (r) 2.0

 Hipparchus
      n : Greek astronomer and mathematician who discovered the
          precession of the equinoxes and made the first known star
          chart and is said to have invented trigonometry (second
          century BC)