Source : Webster's Revised Unabridged Dictionary (1913)

Tripartite \Trip"ar*tite\, a. [L. tripartitus; tri- (see {Tri-})
   + partitus, p. p. of partiri to part, to divide. See {Part},
   v. i.]
   1. Divided into three parts; triparted; as, a tripartite
      leaf.

   2. Having three corresponding parts or copies; as, to make
      indentures tripartite. --A. Smith.

   3. Made between three parties; as, a tripartite treaty.

Source : WordNet®

tripartite
     adj : involving three parties or elements; "the triangular
           mother-father-child relationship"; "a trilateral
           agreement"; "a tripartite treaty"; "a tripartite
           division"; "a three-way playoff" [syn: {triangular}, {trilateral},
            {three-party}, {three-way}]