The Collaborative International Dictionary of English v.0.48:

accresce \ac*cresce"\ ([a^]k*kr[e^]s"), v. i. [L. accrescere.
   See Accrue.]
   1. To accrue. [R.]
      [1913 Webster]

   2. To increase; to grow. [Obs.] --Gillespie.
      [1913 Webster]