[aw-tuh-trof, -trohf]
noun Biology.
any organism capable of self-nourishment by using inorganic materials as a source of nutrients and using photosynthesis or chemosynthesis as a source of energy, as most plants and certain bacteria and protists.
Compare heterotroph.

1935–40; back formation from autotrophic; see auto-1, trophic

autotrophic, adjective Unabridged
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World English Dictionary
autotrophic (ˌɔːtəˈtrɒfɪk)
Compare heterotrophic (of organisms such as green plants) capable of manufacturing complex organic nutritive compounds from simple inorganic sources such as carbon dioxide, water, and nitrates, using energy from the sun

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

autotroph au·to·troph (ô'tə-trŏf', -trōf')
An organism capable of synthesizing its own food from inorganic substances using light or chemical energy. Green plants, algae, and certain bacteria are autotrophs.

au'to·troph'ic (-trŏf'ĭk, -trō'fĭk) adj.
The American Heritage® Stedman's Medical Dictionary
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Science Dictionary
autotroph   (ô'tə-trŏf')  Pronunciation Key 
An organism that manufactures its own food from inorganic substances, such as carbon dioxide and ammonia. Most autotrophs, such as green plants, certain algae, and photosynthetic bacteria, use light for energy. Some autotrophs, such as chemosynthetic bacteria, obtain their energy from inorganic compounds such as hydrogen sulfide by combining them with oxygen. Compare heterotroph.

autotrophic adjective (ô'tə-trŏf'ĭk, -trō'fĭk)
The American Heritage® Science Dictionary
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