commensal

commensal
    adj 1: living in a state of commensalism
    n 1: either of two different animal or plant species living in
         close association but not interdependent
    

Commensal \Com*men"sal\, n. [LL. commensalis; L. com- + mensa
   table: cf. F. commensal. Cf. Mensal.]
   1. One who eats at the same table. [Obs.]
      [1913 Webster]

   2. (Zool.) An animal, not truly parasitic, which lives in,
      with, or on, another, partaking usually of the same food.
      Both species may be benefited by the association.
      [1913 Webster]
    

Commensal \Com*men"sal\, a.
   Having the character of a commensal.
   [1913 Webster]
    

78 Moby Thesaurus words for "commensal":
      cannibal, cannibalistic, carnivorous, coacting, coactive,
      coadjutant, coadjuvant, coefficient, collaborative, collective,
      collectivist, collectivistic, collusive, combined, common,
      communal, communalist, communalistic, communist, communistic,
      communitarian, concerted, concordant, concurrent, concurring,
      conniving, cooperant, cooperating, cooperative, dietetic, dining,
      eating, ecological, ecotopic, ecumenic, feeding, fellow,
      flesh-eating, fruitarian, gastronomic, gluttonous, grain-eating,
      graminivorous, granivorous, grass-eating, harmonious, harmonized,
      herbivorous, insect-eating, insectivorous, joint, lactovegetarian,
      man-eating, meat-eating, mensal, mutual, noncompetitive,
      nourishing, nutritious, omnivorous, omophagous, pantophagous,
      parasitic, phytivorous, phytophagous, plant-eating, postprandial,
      prandial, predacious, preprandial, reciprocal, symbiotic,
      synergetic, synergic, synergistic, uncompetitive, vegetable-eating,
      vegetarian