oxygen cycle

noun

: the cycle whereby atmospheric oxygen is converted to carbon dioxide in animal respiration and regenerated by green plants in photosynthesis

Example Sentences

Recent Examples on the Web This isn’t a call for protecting biodiversity, as noble a cause as that is, but safeguarding the carbon-to-oxygen cycle and weather regulation services of photosynthesising plants. —

Solitaire Townsend, Forbes, 8 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'oxygen cycle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.