The Collaborative International Dictionary of English v.0.48:

Incurrent \In*cur"rent\, a. [L. incurrens, p. pr. incurere,
   incursum, to run in; in- + currere to run.] (Zool.)
   Characterized by a current which flows inward; as, the
   incurrent orifice of lamellibranch Mollusca.
   [1913 Webster]