carbon cycle carbon copy • carbondale · · · Info · Definitions · Characters · · carbon cycle · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) the organic circulation of carbon from the atmosphere into organisms and back again. Synonyms: carbon cycle. · · Noun Definition 1 (noun) a thermonuclear reaction in the interior of stars. Synonyms: carbon cycle. · · Noun Definition 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 y latin small letter y U+0079