[foh-toh-aw-tuh-trof, -trohf]

noun Biology.

any organism that derives its energy for food synthesis from light and is capable of using carbon dioxide as its principal source of carbon.

Origin of photoautotroph

First recorded in 1945–50; photo- + autotroph
Related formspho·to·au·to·troph·ic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for photoautotrophic



(of plants) capable of using light as the energy source in the synthesis of food from inorganic matterSee also photosynthesis
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

photoautotrophic in Science


[fō′tō-ôtə-trŏf′, -trōf′]

See phototroph.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.