The Collaborative International Dictionary of English v.0.48:

Resorb \Re*sorb"\ (r?-s?rb"), v. t. [L. reorbere; pref. re- re-
   + sorbere to suck or drink in.]
   1. To swallow up.
      [1913 Webster]

            Now lifted by the tide, and now resorbed. --Young.
      [1913 Webster]

   2. (Biol.) to absorb (something which has been secreted or
      exuded by the same organism).
      [PJC]

WordNet (r) 3.0 (2006):

resorb
    v 1: undergo resorption [syn: reabsorb, resorb]