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# rem

noun (REM — abbreviation; a rem, rems — old unit)

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

## Everyday

1. REM stands for «rapid eye movement», a stage of sleep when your eyes move quickly under your eyelids and you have most of your dreams. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#m1)
2. A rem is an old unit for measuring how much radiation a body has taken in; scientists now use the sievert. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#m2)
3. «rem» is also a piece of longer words like «remember». [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#m3)

### In the lessons

In science lessons about sleep and health, REM sleep comes in cycles through the night and helps the brain; children need lots of sleep. In science about radiation, the rem (and now the sievert) measures possible harm to the body. On its own «rem» is not an everyday word.

### Examples

- We dream most during REM sleep. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#x1)
- During REM sleep, your eyes move quickly. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#x2)
- Babies spend a lot of time in REM sleep. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#x3)
- A night's sleep has several REM stages. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#x4)
- The rem is an old unit for radiation dose. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#x5)
- Scientists now measure radiation dose in sieverts. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rem/#x6)

### Note

Abbreviation: write REM in capitals for the sleep stage, say «R-E-M» or «rem». In computing, REM is a comment line in old BASIC programs. Not an English word on its own in ordinary talk.

## On Mova

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