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3 definitions found

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


From: Webster's Revised Unabridged Dictionary (1913)

 Per·pen·dic·u·lar·i·ty n.  The quality or state of being perpendicular.

From: WordNet (r) 2.0

      n 1: the relation of opposition between things at right angles
           [syn: orthogonality, orthogonal opposition]
      2: the quality of being at right angles to a given line or
         plane (especially the plane of the horizon)