The Collaborative International Dictionary of English v.0.48:

Repletion \Re*ple"tion\ (r?-pl?"sh?n), n. [L. repletio a filling
   up: cf. F. r['e]pl['e]tion. See Replete.]
   1. The state of being replete; superabundant fullness.
      [1913 Webster]

            The tree had too much repletion, and was oppressed
            with its own sap.                     --Bacon.
      [1913 Webster]

            Repleccioun [overeating] ne made her never sick.
                                                  --Chaucer.
      [1913 Webster]

   2. (Med.) Fullness of blood; plethora.
      [1913 Webster]

WordNet (r) 3.0 (2006):

repletion
    n 1: the state of being satisfactorily full and unable to take
         on more [syn: repletion, satiety, satiation]
    2: eating until excessively full [syn: repletion, surfeit]