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Definition of Calvin cycle
1. Noun. (biochemistry) A series of biochemical reactions that take place in the stroma of chloroplasts in photosynthetic organisms. ¹
¹ Source: wiktionary.com
Medical Definition of Calvin cycle
1. In plants, a cyclical series of carbon-fixing, sugar-producing reactions in the chloroplasts. Some of the sugars (triose phosphates) are recycled, others are stored as carbohydrates. Light is not needed for these reactions, they use the carbon dioxide and energy produced in the light reactions of photosynthesis. (09 Oct 1997)