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# gamma

noun (gamma, gammas)

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

## Everyday

1. Gamma is the third letter of the Greek alphabet, written γ (small) and Γ (capital), after alpha and beta. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#m1)
2. (science) Gamma rays are very powerful, invisible rays given off by radioactive materials and by explosions in space; they can harm living things. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#m2)
3. Gamma is used as a label for the third thing in a list, after alpha and beta. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#m3)

### In the lessons

In maths and science it can stand for an angle or a value; in science lessons about light and radiation gamma rays come at the high-energy end of the electromagnetic spectrum. Phrases: «gamma rays», «alpha, beta and gamma».

### Examples

- Gamma is the third letter of the Greek alphabet. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x1)
- Alpha, beta, gamma, delta. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x2)
- Gamma rays are stronger than X-rays. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x3)
- Hospitals use gamma rays to kill germs on equipment. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x4)
- In the comic, the hero was hit by gamma rays. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x5)
- We labelled the third angle gamma. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x6)
- Thick lead blocks stop gamma rays. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x7)
- Gamma rays come from exploding stars. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/G/gamma/#x8)

### Note

Say «GAM-uh». The word «alphabet» comes from alpha and beta. Comic stories about gamma rays giving superpowers are fiction; real gamma rays are dangerous.

## On Mova

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