mutual dependence of different types of organisms for the satisfaction of their respective nutritional needs. The intermediate or end products of ... [1 related articles] Found on http://www.britannica.com/eb/a-z/s/201
State of mutual dependence, with reference to food supply, of organs or cells of a plant or an animal. ... Origin: syn-+ G. Trophe, nourishment ... (05 Mar 2000) ... Found on http://www.encyclo.co.uk/local/20973