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# oxygen

noun (oxygen — uncountable)

«oxygen» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A gas in the air that people, animals and plants need to live. [tree →](https://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://mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/#m2)

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

## On Mova

- [Trees and pragmatics of «oxygen» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/oxygen/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«oxygen» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/oxygen.html) on Mova free.