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# activator

«activator» in Mova's school dictionary: **something that starts something working or makes it more…** — its meaning for a pupil, its sense in the lessons and examples.

### part of speech

noun (an activator, activators)

### meaning for a pupil

1) An activator is something that starts something working or makes it more active. [tree →](https://md.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://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/#m2)

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

### Trees and pragmatics

[Every meaning and example of «activator» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/A/activator/), each sentence with its dependency tree and frames.