chemoautotroph

n.
An organism, such as a bacterium or protozoan, that obtains its nourishment through the oxidation of inorganic chemical compounds as opposed to photosynthesis.

chemoautotrophic che'mo·au'to·tro'phic (-trō'fĭk, -trŏf'ĭk) adj.
chemoautotrophy che'mo·au·tot'ro·phy (-ô-tŏt'rə-fē) n.

(kē'mō-ô'tə-trōf', -trŏf', kĕm'ō-)
n.

An organism that depends on inorganic chemicals for its energy and principally on carbon dioxide for its carbon. Also called chemolithotroph.

che'mo·au'to·tro'phic (-trō'fĭk, -trŏf'ĭk) adj.

A chemoautotrophic organism.