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# aperture

noun (an aperture, apertures)

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

## Everyday

1. (formal) An opening, hole or gap. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#m1)
2. (photography, science) The hole in a camera or telescope that lets light in; its size can be changed to let in more or less light. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#m2)

### In the lessons

In science lessons on light, the aperture of a camera works like the pupil of your eye: wider in the dark, smaller in bright light. In photography, a big aperture blurs the background. In formal writing "aperture" can mean any narrow opening, like a gap in a castle wall. Phrases: a wide aperture, a narrow aperture, adjust the aperture.

### Examples

- Light enters the camera through the aperture. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#x1)
- The pupil of your eye is like a camera's aperture. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#x2)
- Make the aperture smaller on a sunny day. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#x3)
- The cat squeezed through a narrow aperture in the fence. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#x4)
- Arrows were shot through apertures in the castle wall. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#x5)
- A telescope with a big aperture collects more light. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#x6)
- Delighted with his find he slipped in through the narrow aperture and greedily devoured it all. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/aperture/#x7)

### Note

Countable: an aperture (use "an"). Formal in the sense of "hole"; everyday speech says "hole" or "gap". Pronounced AP-er-cher.

## On Mova

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