oxygen cycle


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

Examples of oxygen cycle in a Sentence

Recent Examples on the Web The water cycle, nitrogen cycle, the oxygen cycle, the carbon cycle—dust is feeding into all of these. Matt Simon, WIRED, 27 Nov. 2023 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 examples are programmatically compiled from various online sources to illustrate current usage of the word 'oxygen cycle.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1935, in the meaning defined above

Time Traveler
The first known use of oxygen cycle was in 1935

Dictionary Entries Near oxygen cycle

Cite this Entry

“Oxygen cycle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oxygen%20cycle. Accessed 24 Jun. 2024.

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