oxygen cycle
noun Ecology.
the process by which oxygen released into the atmosphere by photosynthetic organisms is taken up by aerobic organisms while the carbon dioxide released as a by-product of repiration is taken up for photosynthesis.
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Nearby words
- oxygen acid,
- oxygen affinity hypoxia,
- oxygen bar,
- oxygen capacity,
- oxygen consumption,
- oxygen debt,
- oxygen deficit,
- oxygen demand,
- oxygen effect,
- oxygen lance
Origin of oxygen cycle
First recorded in 1930–35
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019