presence of oxygen

collocation in English

meaningsofpresenceandoxygen

These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withpresenceoroxygen.
presence
noun
uk
/ˈprez.əns/us
/ˈprez.əns/
the fact that someone or something is in ...
See more atpresence
oxygen
noun[U]
uk
/ˈɒk.sɪ.dʒən/us
/ˈɑːk.sɪ.dʒən/
a chemical element that is a gas with no smell or colour. Oxygen forms a large part of the air on earth, and is needed by animals and plants ...
See more atoxygen

(Definition ofpresenceandoxygenfrom theCambridge English Dictionary© Cambridge University Press)

Examplesofpresence of oxygen

These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
This additional energy obtained in thepresenceofoxygenmay be vital for the maintenance of motility and for survival of these organisms.
From theCambridge English Corpus
It was established that in thepresenceofoxygenthe intensity of carbon dioxide emission is much lower than that in anaerobic conditions.
From theCambridge English Corpus
Methane is produced as a by-product of both aerobic and anaerobic decomposition, which means that the waste rots either with or without thepresenceofoxygen.
From the
Hansard archive
Example from the Hansard archive. Contains Parliamentary information licensed under theOpen Parliament Licence v3.0
At thepresenceofoxygenand flame, 2-methylhexane, like heptane, combusts mostly completely into water and carbon dioxide.
From
Wikipedia
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They are very sensitive to thepresenceofoxygeneven at trace level.
From
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The reactor's metallic uranium fuel could easily burn in thepresenceofoxygen, unlike the uranium dioxide used in modern reactors.
From
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Thorium monoxide has recently been produced through laser ablation of thorium in thepresenceofoxygen.
From
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Furthermore, the damage is related to thepresenceofoxygen, and use of an oxygen-scrubbing system can reduce optical damage indefinitely.
From
Wikipedia
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In thepresenceofoxygen, including atmospheric concentrations, carbon monoxide burns with a blue flame, producing carbon dioxide.
From
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He found that the enzyme responsible for this reaction is hydrogenase, but that the hydrogenase lost this function in thepresenceofoxygen.
From
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Thepresenceofoxygenand water vapour in the atmosphere could be evidence for life.
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This may occur with or without thepresenceofoxygen.
From
Wikipedia
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In contrast to widespread legend, the birds were "not" used in the mines to indicate thepresenceofoxygen, they were too valuable.
From
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The fluorescent compound is sensitive to thepresenceofoxygendissolved in the broth.
From
Wikipedia
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This pathway can function with or without thepresenceofoxygen.
From
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Acrolein will polymerize in thepresenceofoxygenand in water at concentrations above 22%.
From
Wikipedia
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This operon is up-regulated by thepresenceofoxygenand responds to a variety of carbon sources.
From
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Irradiated by a strong optical beam burns inpresenceofoxygen.
From
Wikipedia
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It grows best in thepresenceofoxygenbut does not require it.
From
Wikipedia
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In thepresenceofoxygen, the splint re-ignites and burns back into life.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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