Definition of Autotrophic 1. Of or relating to organisms (as green plants) that can make complex organic nutritive compounds from simple inorganic sources by photosynthesis Adjective Synonyms for word "autotrophic" Semanticaly linked words with "autotrophic" Antonyms to adjective "autotrophic" Lexical Analysis for "autotrophic" heterotrophic requiring organic compounds of carbon and nitrogen for nourishment autotroph plant capable of synthesizing its own food from simple organic substances has derived form autotroph etymology chemoautotrophic etymology nonautotrophic etymological origin of -trophic etymological origin of auto- etymologically related autotroph is derived from nonautotrophic