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# gas

noun (gas, gases or gasses); verb (gas, gasses, gassed, gassing — rare)

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

## Everyday

1. A substance like air that has no fixed shape and spreads out to fill any space. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#m1)
2. A gas that burns and is used for cooking and heating: "a gas stove". [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#m2)
3. (American, Canadian) Gasoline, the fuel for cars; British, Irish, Australian and NZ say "petrol". [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#m3)
4. Air in the stomach. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#m4)
5. Gas can also be burned to make light, as in old street lamps. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#m5)

### In the lessons

In science, matter has three main states: solid, liquid and gas; water becomes a gas (water vapour) when it boils; air is a mixture of gases (nitrogen, oxygen, carbon dioxide). In safety: natural gas smells like rotten eggs (a smell is added); if you smell gas, don't touch switches, get out and tell an adult. Phrases: gas stove, gas station, gas leak, natural gas, step on the gas (hurry).

### Examples

- Air is a gas. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x1)
- When water boils, it turns into a gas. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x2)
- We cook on a gas stove. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x3)
- If you smell gas, leave the house. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x4)
- Dad filled the car with gas. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x5)
- Plants take in a gas called carbon dioxide. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x6)
- A balloon is filled with helium gas. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x7)
- Gases spread out to fill a container. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x8)
- The name glittered in gas-jets over the entrance. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gas/#x9)

### Note

Plural "gases". A gas has no shape or fixed size; a liquid has a fixed size but no shape; a solid has both. In the US "gas" for cars = British "petrol". Many gases are invisible.

## On Mova

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