Source : Webster's Revised Unabridged Dictionary (1913)

Influent \In"flu*ent\, a. [L. influens, -entis, p. pr. of
   influere, influxum, to flow in; pref. in- in + fluere to
   flow. See {Fluid}.]
   1. Flowing in. ``With influent tide.'' --Cowper. ``Influent
      odors.'' --Mrs. Browning.

   2. Exerting influence; influential. [Obs.]

            I find no office by name assigned unto Dr.Cox, who
            was virtually influent upon all, and most active.
                                                  --Fuller.

Source : WordNet®

influent
     adj : that is flowing inward [syn: {inflowing}]