Source : Webster's Revised Unabridged Dictionary (1913)

Contributary \Con*trib"u*ta*ry\, a.
   1. Contributory. [R.]

   2. Tributary; contributing. [R.]

            It was situated on the Ganges, at the place where
            this river received a contributary stream.
                                                  --D'Anville
                                                  (Trans. ).