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An organism that uses light for its energy needs. Compare: photoautotroph, photoheterotroph, photolithotroph.
Farlex Partner Medical Dictionary © Farlex 2012
An organism that is capable of using light energy to synthesize sugars and other organic molecules from carbon dioxide. Green plants, algae, and cyanobacteria are phototrophs. Also called photoautotroph.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
phototrophan ORGANISM that uses light as the primary ENERGY source.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005