资料来源 : Webster's Revised Unabridged Dictionary (1913)

Reciprocality \Re*cip`ro*cal"i*ty\, n.
   The quality or condition of being reciprocal; reciprocalness.
   [R.]

资料来源 : WordNet®

reciprocality
     n : a relation of mutual dependence or action or influence [syn:
          {reciprocity}]