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carbon dioxide cycle

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car·bon di·ox·ide cy·cle

, carbon cycle
the circulation of carbon as CO2 from the expired air of animals and decaying organic matter to plant life where it is synthesized (through photosynthesis) to carbohydrate material, from which, as a result of catabolic processes in all life, it is again ultimately released to the atmosphere as CO2.
Farlex Partner Medical Dictionary © Farlex 2012

carbon dioxide cycle

The route followed by CO2 as it passes through biological systems: it is incorporated by plants or bacteria and transformed into organic matter ingested by non-CO2-fixing organisms, which die or excrete organic material, providing the substrate for the continuing cycle.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

car·bon di·ox·ide cy·cle

, carbon cycle (kahr'bŏn dī-oks'īd sī'kĕl)
The circulation of carbon as CO2 from the expired air of animals and decaying organic matter to plant life where it is synthesized (through photosynthesis) to carbohydrate material, from which, as a result of catabolic processes in all life, it is again ultimately released to the atmosphere as carbon dioxide.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive
The observations by Keeling's group indicate that climate change is indeed altering Earth's carbon dioxide cycle, although the exact cause of the recent temperature increase remains uncertain.
Warming reaps earlier spring growth
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