Calvin cycle

noun

Cal·​vin cycle ˈkal-vən- How to pronounce Calvin cycle (audio)
: the cycle of enzyme-catalyzed dark reactions of photosynthesis that occurs in the chloroplasts of plants and in many bacteria and that involves the fixation of carbon dioxide and the formation of a 6-carbon sugar

Examples of Calvin cycle in a Sentence

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Crucially, the McG cycle links with the Calvin cycle, allowing the two systems to balance out excess molecules. Aamir Khollam, Interesting Engineering, 13 Sep. 2025 So, the team was interested in establishing something similar to the Calvin cycle, but capable of outputting a two-carbon molecule without re-emitting the carbon dioxide molecule that had just been captured. ArsTechnica, 12 Sep. 2025

Word History

Etymology

Melvin Calvin

First Known Use

1955, in the meaning defined above

Time Traveler
The first known use of Calvin cycle was in 1955

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Cite this Entry

“Calvin cycle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Calvin%20cycle. Accessed 20 Sep. 2025.

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