[Elamur Dictionary](https://md.dictionary.elamur.ai/free/en/) · [this page in HTML](https://dictionary.elamur.ai/free/en/english/periscope/)

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# periscope

noun (a periscope, periscopes)

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

## Everyday

A long tube with mirrors at each end that lets you see over or around something, used in submarines and in toys. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/periscope/#m1)

### In the lessons

In science lessons on light, pupils build a periscope with two mirrors at 45 degrees to show that light reflects. In stories a submarine raises its periscope to look above the sea. Phrases: up periscope, look through a periscope, make a periscope.

### Examples

- The captain raised the periscope to look at the ships. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/periscope/#x1)
- We made a periscope from a juice carton and two mirrors. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/periscope/#x2)
- With a periscope you can see over a wall. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/periscope/#x3)
- Light bounces off both mirrors in a periscope. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/periscope/#x4)
- He used his periscope to watch the parade over the crowd. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/periscope/#x5)
- The periscope rose out of the water. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/P/periscope/#x6)

### Note

Countable: a periscope, periscopes. The mirrors are parallel, each tilted at 45 degrees. Do not mix up with telescope (makes far things look nearer) or microscope (makes tiny things look bigger).

## On Mova

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