dark re action

dark reaction

noun
the phase of photosynthesis, not requiring light, in which carbohydrates are synthesized from carbon dioxide.
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World English Dictionary
dark reaction
 
n
botany Compare light reaction the stage of photosynthesis involving the reduction of carbon dioxide and the dissociation of water, using chemical energy stored in ATP: does not require the presence of light

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
dark reaction  
Any of the chemical reactions that take place during the second stage of photosynthesis and do not require light. During the dark reactions, energy released from ATP (created by the light reactions) drives the fixation of carbon from carbon dioxide in organic molecules. The Calvin cycle forms part of the dark reactions. As long as ATP is available, the dark reactions can occur in darkness or in light. Compare light reaction. See more at Calvin cycle, photosynthesis.

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