Try Our Apps


Pore Over vs. Pour Over


[aw-tuh-trof, -trohf] /ˈɔ təˌtrɒf, -ˌtroʊf/
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.
Origin of autotroph
1935-40; back formation from autotrophic; see auto-1, trophic
Related forms
autotrophic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for autotrophic
Historical Examples
British Dictionary definitions for autotrophic


(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 Compare heterotrophic
Derived Forms
autotroph (ˈɔːtətrəʊf) noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
autotrophic in Medicine

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
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
autotrophic in Science
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
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for autotroph

Few English speakers likely know this word

Word Value for autotrophic

Scrabble Words With Friends