Word Study
autotrophic
CIDE DICTIONARY
autotrophic, a. [Auto- + trophic.].
- Capable of self-nourishment; requiring only minerals for growth; using carbonate or carbon dioxide as a source of carbon and simple inorganic nitrogen as a nitrogen source; -- said of all plants in which photosynthetic activity takes place, and certain bacteria. It is opposed to parasitism or saprophytism. [Webster 1913 Suppl.]
- of or pertaining to an autotroph. [WordNet 1.5]
OXFORD DICTIONARY
autotrophic, adj. Biol. able to form complex nutritional organic substances from simple inorganic substances such as carbon dioxide (cf. HETEROTROPHIC).
Etymology
AUTO- + Gk trophos feeder
For further exploring for "autotrophic" in Webster Dictionary Online