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# oxygen

«oxygen» in Mova's school dictionary: **A gas in the air that people, animals and plants need to…** — its meaning for a pupil, its sense in the lessons and examples, with 5 sentences of Mova's corpora that use it.

### part of speech

noun (oxygen — uncountable)

### meaning for a pupil

1) A gas in the air that people, animals and plants need to live. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#m1)

2) A chemical element (symbol O) found in air, water and many things. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#m2)

### sense in the lessons

In science, we breathe in oxygen; the lungs pass it into the blood which carries it around the body; plants give off oxygen when they make food using sunlight; fire needs oxygen to burn; water is made of hydrogen and oxygen (H2O). About one fifth of air is oxygen. Phrases: oxygen mask, oxygen tank.

### examples

- We need oxygen to live. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x1)
- Plants give off oxygen. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x2)
- Fire needs oxygen to burn. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x3)
- Divers carry oxygen tanks. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x4)
- Our blood carries oxygen around the body. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x5)
- Water is made of hydrogen and oxygen. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x6)
- About a fifth of the air is oxygen. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x7)
- Put on your own oxygen mask first. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#x8)

### note

Uncountable: "oxygen", not "an oxygen". Oxygen has no colour or smell. Fish get oxygen from water with their gills. Covering a small fire takes away its oxygen and puts it out.

### In the corpora

- [Whale poo spreads nutrients that feed plankton, and plankton makes much of Earth's oxygen.](https://md.mova.elamur.ai/free/en/corpora/school/biology/26-whales/17/)
- [Almost all the oxygen we breathe was made by plants and tiny algae in the sea.](https://md.mova.elamur.ai/free/en/corpora/school/biology/56-how-plants-grow/9/)
- [Blood is always red, bright red with oxygen and dark red without, even though veins look blue through your skin.](https://md.mova.elamur.ai/free/en/corpora/school/biology/65-the-heart-and-blood/3/)
- [Red blood cells carry oxygen using iron-rich haemoglobin, white cells fight germs, and platelets help stop bleeding.](https://md.mova.elamur.ai/free/en/corpora/school/biology/65-the-heart-and-blood/9/)
- [Every cell in your body needs oxygen from the air, and your lungs are where the air and the blood meet.](https://md.mova.elamur.ai/free/en/corpora/school/biology/66-lungs-and-breathing/0/)

### Trees and pragmatics

[Every meaning and example of «oxygen» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/), each sentence with its dependency tree and frames.