carbon dioxide cycle


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to carbon dioxide cycle: nitrogen cycle, Oxygen cycle

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.

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.

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.
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.
Full browser ?