pho·​to·​res·​pi·​ra·​tion | \ ˌfō-tō-ˌre-spə-ˈrā-shən How to pronounce photorespiration (audio) \

Definition of photorespiration

: a light-dependent process in some plants resulting in the oxidation of glycolic acid and release of carbon dioxide that under some environmental conditions (such as high temperature) tends to inhibit photosynthesis

Examples of photorespiration in a Sentence

Recent Examples on the Web These new methods of photorespiration use alternate sets of promoters and genes, allowing plants to achieve the same results while expending far less energy. David Grossman, Popular Mechanics, "Scientists Tweak Photosynthesis and Boost Crop Growth by 40 Percent," 4 Jan. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photorespiration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of photorespiration

1945, in the meaning defined above

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The first known use of photorespiration was in 1945

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Cite this Entry

“Photorespiration.” Dictionary, Merriam-Webster, Accessed 14 Jul. 2020.

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