saprobic 1. Relating to organisms that are able to live in highly polluted water. 2. Of or relating to organisms that live on dead or decaying matter. 3. Living in or being in an environment rich in organic matter but lacking oxygen. 4. An organism that derives its nourishment from nonliving or decaying organic matter. 5. Pertaining to water ri... Found on http://www.wordinfo.info/words/index/info/view_unit/1893/