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# optical

adjective (optical); adverb (optically)

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

## Everyday

1. To do with seeing and the eyes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#m1)
2. To do with light and how it travels, or with instruments that use light, such as lenses, microscopes and telescopes. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#m2)

### In the lessons

In science, «optical illusion» is a picture that tricks your eyes and brain; «optical fibre» carries light (and internet data) along thin glass threads. Opticians sell glasses. Phrases: «optical illusion», «optical fibre», «optical instrument», «optical mouse».

### Examples

- The picture is an optical illusion: the two lines look different but are the same length. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#x1)
- Optical fibres carry internet signals as flashes of light. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#x2)
- A telescope is an optical instrument. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#x3)
- The optical mouse uses a tiny light to see movement. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#x4)
- Optical shops sell glasses and contact lenses. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#x5)
- The magician used optical tricks with mirrors. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/O/optical/#x6)

### Note

Adjective. Related: optician (a person who tests eyes and sells glasses), optics (the science of light). UK spelling «optical fibre», US «optical fiber». Trap: «optical» is about sight and light, not «optional» (you can choose).

## In Jewish tradition

In science, «optical illusion» is a picture that tricks your eyes and brain; «optical fibre» carries light (and internet data) along thin glass threads. Opticians sell glasses. Phrases: «optical illusion», «optical fibre», «optical instrument», «optical mouse».

### Note

Adjective. Related: optician (a person who tests eyes and sells glasses), optics (the science of light). UK spelling «optical fibre», US «optical fiber». Trap: «optical» is about sight and light, not «optional» (you can choose).

## On Mova

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