Source : Webster's Revised Unabridged Dictionary (1913)

Provisional \Pro*vi"sion*al\, a. [Cf. F. provisionnel.]
   Of the nature of a provision; serving as a provision for the
   time being; -- used of partial or temporary arrangements; as,
   a provisional government; a provisional treaty.

Source : WordNet®

provisional
     adj : under terms not final or fully worked out or agreed upon;
           "probationary employees"; "a provisional government";
           "just a tentative schedule" [syn: {probationary}, {provisionary},
            {tentative}]