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autotroph

[ aw-tuh-trof, -trohf ]
/ ˈɔ təˌtrɒf, -ˌtroʊf /
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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.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Compare heterotroph.

Origin of autotroph

1935–40; back formation from autotrophic;see auto-1, trophic
au·to·troph·ic, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

Medical definitions for autotroph

autotroph
[ ôtə-trŏf′, -trōf′ ]

n.

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•trophic (-trŏfĭk, -trōfĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for autotroph

autotroph
[ ôtə-trŏf′ ]

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-trŏfĭk, -trōfĭk)
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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