Source : Webster's Revised Unabridged Dictionary (1913)

Inferential \In`fer*en"tial\, a.
   Deduced or deducible by inference. ``Inferential proofs.''
   --J. S. Mill.

Source : WordNet®

inferential
     adj 1: relating to or having the nature of illation or inference;
            "the illative faculty of the mind" [syn: {illative}]
     2: of reasoning; proceeding from general premisses to a
        necessary and specific conclusion
     3: resembling or dependent on or arrived at by inference; "an
        illative conclusion"; "inferential reasoning" [syn: {illative}]
     4: derived or capable of being derived by inference
     5: based on interpretation; not directly expressed