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# rad

adjective (rad — slang); noun (a rad, rads — science, rare); abbreviation (rad)

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

## Everyday

1. (slang, mainly US and Australia) Rad means really cool or great: «That skateboard trick was rad!» [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#m1)
2. (science) A rad is an old unit for measuring how much radiation something has absorbed. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#m2)
3. (maths) rad is short for radian, a unit for measuring angles used in higher maths. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#m3)
4. (UK, informal) A rad can be short for a radiator. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#m4)

### In the lessons

In everyday talk, especially among skaters and surfers or in old cartoons, «rad» means awesome; it can sound a bit retro now. In maths and science, «rad» is an abbreviation you meet later in secondary school. In a story, «rad» shows a cool, casual character. Phrases: «totally rad», «that's rad».

### Examples

- (slang) That's so rad! [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#x1)
- (slang) He did a totally rad jump on his BMX. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#x2)
- (slang) Your new shoes are rad. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#x3)
- (maths) A full circle is about 6.28 rad. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#x4)
- (science) Doctors once measured radiation doses in rads. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#x5)
- (UK, informal) Put your wet socks on the rad to dry. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/R/rad/#x6)

### Note

Slang «rad» is short for «radical». Informal; not for formal writing. The maths and science meanings are abbreviations; read «rad» as «radians» or «rads». Do not confuse with «red».

## On Mova

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