excretory

from WordNet (r) 3.0 (2006)

excretory
    adj 1: of or relating to the process of excretion

from The Collaborative International Dictionary of English v.0.48

Excretory \Ex*cre"to*ry\, a. [Cf. F. excr['e]toire.]
   Having the quality of excreting, or throwing off
   excrementitious matter.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

33 Moby Thesaurus words for "excretory":
      egestive, eliminative, excretionary, excretive, exudative,
      lachrymal, lachrymose, lacrimatory, lactational, lacteal, lacteous,
      leaky, oozy, percolative, permeable, pervious, porous, rheumy,
      runny, salivant, salivary, salivous, secretional, secretive,
      secretory, seminal, serous, sialagogic, spermatic, transudative,
      watering, watery, weepy