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# erosion

«erosion» in Mova's school dictionary: **the slow wearing away of rock, soil or land by water…** — 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 (erosion — uncountable)

### meaning for a pupil

1) Erosion is the slow wearing away of rock, soil or land by water, wind, ice or waves. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#m1)

2) Erosion can mean the slow weakening or loss of something, like trust or rights. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#m2)

### sense in the lessons

A key geography and science word: rivers carve valleys, waves erode cliffs, wind blows away soil. Planting trees and grass helps stop erosion. In formal writing it can describe something slowly getting worse. Phrases: soil erosion, coastal erosion, wind erosion, the erosion of trust.

### examples

- Coastal erosion has made the cliff fall into the sea. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#x1)
- Tree roots help prevent soil erosion. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#x2)
- The Grand Canyon was made by erosion over millions of years. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#x3)
- Wind erosion shaped the strange rocks in the desert. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#x4)
- The farmers planted hedges to stop erosion. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#x5)
- Erosion is slow, but it never stops. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#x6)
- Lies caused an erosion of trust between the friends. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/E/erosion/#x7)

### note

Uncountable: «erosion», not «an erosion» usually. Verb: erode. Do not confuse with «weathering» (rock breaking up where it is) — erosion means the pieces are carried away. Also not «corrosion» (metal being eaten away by rust or chemicals).

### In the corpora

- [Breaking rock where it stands is called weathering; carrying the bits away is called erosion.](https://md.mova.elamur.ai/free/en/corpora/school/geography/52-weathering-and-erosion/1/)
- [Erosion is the carrying away of weathered bits of rock by water, wind, ice or gravity.](https://md.mova.elamur.ai/free/en/corpora/school/geography/52-weathering-and-erosion/11/)
- [Running water is the most powerful agent of erosion on Earth.](https://md.mova.elamur.ai/free/en/corpora/school/geography/52-weathering-and-erosion/13/)
- [Rising seas caused by global warming make coastal erosion and flooding worse.](https://md.mova.elamur.ai/free/en/corpora/school/geography/55-coasts-and-caves/15/)
- [About a third of the world's soils are degraded by erosion, salt, pollution or overuse.](https://md.mova.elamur.ai/free/en/corpora/school/geography/56-soil/16/)

### Trees and pragmatics

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