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# corrosion

«corrosion» in Mova's school dictionary: **the slow damage of metal or stone by water, air or…** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

noun (corrosion — uncountable)

### meaning for a pupil

1) Corrosion is the slow damage of metal or stone by water, air or chemicals, such as iron turning to rust. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#m1)

2) Corrosion can be any slow wearing away or destruction of something. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#m2)

### sense in the lessons

In science, corrosion is a chemical change: iron reacts with water and oxygen to form rust; salt water speeds it up, so cars and piers by the sea corrode faster. People stop corrosion with paint, oil, grease or by coating iron with zinc (galvanising). Phrases: «signs of corrosion», «protect against corrosion».

### examples

- Corrosion has eaten holes in the old metal gate. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#x1)
- Salt on winter roads speeds up corrosion of cars. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#x2)
- Paint protects the bridge from corrosion. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#x3)
- In our experiment, the iron nail in salty water showed the most corrosion. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#x4)
- Gold does not suffer from corrosion, so it stays shiny. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#x5)
- The battery leaked, and corrosion ruined the remote control. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/corrosion/#x6)

### note

Uncountable. Verb: corrode; adjective: corrosive (a corrosive acid — safety: these burn skin, so never touch them). Rust is corrosion of iron and steel only; other metals corrode in other colours, like green on copper.

### Trees and pragmatics

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