[Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/dictionaries/school/w/ozone.html)

[home](https://md.mova.elamur.ai/free/en/) / [dictionaries](https://md.mova.elamur.ai/free/en/dictionaries/) / [The school dictionary](https://md.mova.elamur.ai/free/en/dictionaries/school/) / ozone

[← O](https://md.mova.elamur.ai/free/en/dictionaries/school/O/)

# ozone

«ozone» in Mova's school dictionary: **A gas made of three oxygen atoms, which forms a layer…** — its meaning for a pupil, its sense in the lessons and examples, with 4 sentences of Mova's corpora that use it.

### part of speech

noun (ozone — uncountable)

### meaning for a pupil

1) A gas made of three oxygen atoms, which forms a layer high in the sky that protects Earth from harmful sunlight. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#m1)

2) A sharp smell, like after a thunderstorm or near the sea, that people often call ozone. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#m2)

3) (informal, old-fashioned) Fresh, clean air. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#m3)

### sense in the lessons

In science lessons the ozone layer blocks much of the Sun's ultraviolet (UV) light; chemicals once used in sprays and fridges made a hole in it, and the world agreed to stop using them. Near the ground ozone is a pollutant that can hurt your lungs. In safety: wear sunscreen because UV light can still reach you. Phrases: the ozone layer, a hole in the ozone layer, ozone-friendly.

### examples

- The ozone layer protects us from harmful UV rays. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#x1)
- Some old sprays damaged the ozone. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#x2)
- After the lightning, the air smelled of ozone. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#x3)
- Ozone is made of three oxygen atoms. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#x4)
- On hot smoggy days, ozone near the ground can make breathing hard. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#x5)
- The fridge was labelled ozone-friendly. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/O/ozone/#x6)

### note

Uncountable: some ozone, not «an ozone». Formula O3, while ordinary oxygen we breathe is O2. The ozone hole is a different thing from global warming, though people often mix them up.

### In the corpora

- [Yet when the world agreed to act, the ozone layer began to heal.](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/33-the-air-we-breathe/6/)
- [Those gases were banned by a world agreement in 1987, and the ozone hole has been reported to be slowly healing.](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/33-the-air-we-breathe/14/)
- [In 1987 countries agreed in the Montreal Protocol to ban chemicals that damaged the ozone layer, and the ozone layer is slowly healing.](https://md.mova.elamur.ai/free/en/corpora/school/history/79-worries-and-hopes-is-the-world-getting-better/7/)
- [The ozone layer in the stratosphere soaks up much of the Sun's harmful ultraviolet light.](https://md.mova.elamur.ai/free/en/corpora/school/world/69-wind-and-the-atmosphere/13/)

### Trees and pragmatics

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