The Collaborative International Dictionary of English v.0.48:

Saprophytic \Sap`ro*phyt"ic\, a.
   Feeding or growing upon decaying animal or vegetable matter;
   pertaining to a saprophyte or the saprophytes.
   [1913 Webster]

WordNet (r) 3.0 (2006):

saprophytic
    adj 1: obtaining food osmotically from dissolved organic
           material
    2: (of some plants or fungi) feeding on dead or decaying organic
       matter

Moby Thesaurus II by Grady Ward, 1.0:

46 Moby Thesaurus words for "saprophytic":
   accompanying, accordant, agreeing, associate, associated,
   at one with, coacting, coactive, coadunate, coincident,
   collaborative, collective, collusive, combined, combining,
   concerted, concomitant, concordant, concurrent, concurring,
   conjoint, consilient, conspiratorial, cooperant, cooperative,
   coordinate, coworking, harmonious, joint, meeting, parasitic,
   putrefacient, putrefactive, rotting, saprobic, saprogenic,
   saprogenous, saprophilous, septic, symbiotic, synchronous,
   synergetic, synergic, synergistic, united, uniting