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# cavity

«cavity» in Mova's school dictionary: **a hollow space inside something solid** — its meaning for a pupil, its sense in the lessons and examples, with 3 sentences of Mova's corpora that use it.

### part of speech

noun (a cavity, cavities)

### meaning for a pupil

1) A cavity is a hollow space inside something solid. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#m1)

2) A cavity is a small hole in a tooth caused by decay. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#m2)

3) A body cavity is a space inside the body, such as the chest or the mouth. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#m3)

### sense in the lessons

At the dentist a cavity is a hole in your tooth that needs a filling; eating lots of sugar and not brushing can cause cavities. In science, a cavity is any hollow, like the space inside a wall, a rock or the body (the chest cavity holds the heart and lungs). Phrases: «have a cavity», «fill a cavity», «cavity wall», «nasal cavity».

### examples

- The dentist found a cavity in my back tooth. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x1)
- Brushing twice a day helps stop cavities. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x2)
- Sweets and fizzy drinks can cause cavities. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x3)
- The heart and lungs sit in the chest cavity. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x4)
- The house has cavity walls filled with insulation. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x5)
- Water had worn a cavity in the rock. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x6)
- A bird nested in a cavity in the old tree. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x7)
- No cavities this time — well done! [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x8)
- Within the cavity lay a sword, with a golden hilt, and a pair of sandals. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/C/cavity/#x9)

### note

Countable: one cavity, two cavities (y changes to ies). Stress: CAV-i-ty. A cavity in a tooth does not heal by itself; a dentist fills it. «Cavity» is a more formal word for «hole» or «hollow».

### In the corpora

- [Bacteria in plaque feed on sugar and make acid, which dissolves enamel and causes tooth decay, a hole called a cavity.](https://md.mova.elamur.ai/free/en/corpora/school/medicine/24-sugar-teeth-and-the-dentist/4/)
- [But germs in the mouth eat sugar left on the teeth and make acid, and the acid makes holes called cavities.](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/5/)
- [A hole in a tooth caused by decay is called a cavity.](https://md.mova.elamur.ai/free/en/corpora/school/world/35-teeth-and-care/16/)

### Trees and pragmatics

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