Chemoautotroph

Definition

noun, plural: chemoautotrophs

An organism (typically a bacterium or a protozoan) that obtains energy through chemical process, which is by the oxidation of electron donating molecules from the environment, rather than by photosynthesis.


Supplement

Chemotrophs obtain energy mainly from carbon dioxide and from other inorganic chemicals. Chemotrophs can be chemoautotrophs or chemoheterotrophs.


Word origin: chemo- (chemical) + troph (nourishment).
Related forms: chemotrophic (adjective)


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