oxygen cycle

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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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Origin of oxygen cycle

First recorded in 1930–35

Words nearby oxygen cycle

oxygenation, oxygenator, oxygen bar, oxygen capacity, oxygen consumption, oxygen cycle, oxygen debt, oxygen deficit, oxygen demand, oxygen-deprivation theory of narcosis, oxygen effect

How to use oxygen cycle in a sentence

It almost mirrors the Buddhist cycle of life, death, and rebirth.
The Buddhist Business of Poaching Animals for Good Karma|Brendon Hong|December 28, 2014|DAILY BEAST
Eventually, the mistletoe bush grows, blooms, and forms berries, and the cycle begins anew.
Mistletoe is the Vampire of Plants|Helen Thompson|December 21, 2014|DAILY BEAST
The Newsroom aired its final episode on Sunday, already an eternity ago in news-cycle terms.
A Few Great Men Too Many: Aaron Sorkin Doesn’t Think You Can Handle the Truth|Arthur Chu|December 21, 2014|DAILY BEAST
The others are difficult to identify, since they reacted with other oxygen-bearing molecules in the soil.
Methane on Mars: Life or Just Gas?|Matthew R. Francis|December 17, 2014|DAILY BEAST

It reacts very readily with oxygen by burning smokelessly, with carbon dioxide and water as its byproducts.
Methane on Mars: Life or Just Gas?|Matthew R. Francis|December 17, 2014|DAILY BEAST
In the lungs hemoglobin forms a loose combination with oxygen, which it readily gives up when it reaches the tissues.
A Manual of Clinical Diagnosis|James Campbell Todd
They are cells which have been highly differentiated for the purpose of carrying oxygen from the lungs to the tissues.
A Manual of Clinical Diagnosis|James Campbell Todd
The sexual cycle can take place only within the body of one genus of mosquito, anopheles.
A Manual of Clinical Diagnosis|James Campbell Todd
Here they enter red corpuscles as young malarial parasites, and the majority pass through the asexual cycle just described.
A Manual of Clinical Diagnosis|James Campbell Todd
Its most important compound is water, of which it forms one-ninth, the other eight-ninths consisting of oxygen.
Elements of Agricultural Chemistry|Thomas Anderson