troph·ic (tr?f??k, tr??f?k)adj.1. Of or relating to nutrition.2. Ecology Of or involving the feeding habits or relationships of different organisms in a food chain or food web.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.trophic (?tr?f?k) adj (Environmental Science) of or relating to nutrition: the trophic levels of a food chain. [C19: from Greek trophikos, from troph? food, from trephein to feed] ?trophically advCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014troph?ic (?tr?f ?k, ?tro? f?k) adj. of or pertaining to nutrition; involving nutritive processes: a trophic disease. [1870?75;