Source : Webster's Revised Unabridged Dictionary (1913)

Evidentiary \Ev`i*den"ti*a*ry\, a.
   Furnishing evidence; asserting; proving; evidential.

         When a fact is supposed, although incorrectly, to be
         evidentiary of, a mark of, some other fact. --J. S.
                                                  Mill.

Source : WordNet®

evidentiary
     adj 1: pertaining to or constituting evidence; "evidentiary
            technique"; "an evidentiary fact"
     2: serving as or based on evidence; "evidential signs of a
        forced entry"; "its evidentiary value" [syn: {evidential}]