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

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# activator

noun (an activator, activators)

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

## Everyday

1. An activator is something that starts something working or makes it more active. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#m1)
2. In science, an activator is a substance that starts or speeds up a chemical change, like the hardener in some glues. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#m2)

### In the lessons

In science and technology it is a word for whatever switches something on. In everyday life it appears on glue, paint and cleaning products. Phrases: glue activator, activator solution.

### Examples

- Add the activator to the slime glue to make it thicken. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#x1)
- The alarm's activator is a small sensor by the door. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#x2)
- Some glue needs an activator to set hard. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#x3)
- The coach was the team's activator, always getting them moving. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#x4)
- Read the safety label before using the activator. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#x5)
- Sunlight acts as an activator for some reactions. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#x6)

### Note

Countable. From activate (to make active) + -or. Related: active, activity, activation. Safety: activators in craft kits can irritate skin — follow instructions.

## On Mova

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