Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any organism that can synthesize its food from inorganic substances, using heat or light as a source of energy

from the GNU version of the Collaborative International Dictionary of English

  • n. an organism which is autotrophic, i. e., an organism (such as most plants and certain microorganisms) which are capable of synthesizing its own food from simple organic substances, requiring only minerals as nutrients for growth, and using carbonate or carbon dioxide as a source of carbon and simple inorganic nitrogen as a nitrogen source; the energy required is derived from photosynthesis or chemosynthesis. Opposed to heterotroph. See also auxotroph.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. plant capable of synthesizing its own food from simple organic substances

Etymologies

auto- + -troph (Wiktionary)

Examples

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