The Collaborative International Dictionary of English v.0.48:
nonparasitic \nonparasitic\ (Biology) adj. Not parasitic. Syn: free-living, nonsymbiotic. [WordNet 1.5]WordNet (r) 3.0 (2006):
nonparasitic adj 1: not parasitic on another organism [syn: free-living, nonparasitic, nonsymbiotic]