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# invader

noun (an invader, invaders)

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

## Everyday

1. An invader is a person, army or country that enters another place by force to take it over. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#m1)
2. (science) An invader is a plant, animal or germ that spreads into a place where it does not belong and causes harm. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#m2)
3. An invader is anyone who comes in where they are not wanted. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#m3)

### In the lessons

In history lessons Britain had many invaders: Romans, Anglo-Saxons, Vikings and Normans. In science, invasive species like cane toads in Australia or grey squirrels in the UK are called invaders, and the immune system fights invaders such as germs. In games like Space Invaders aliens attack. Phrases: «foreign invaders», «Viking invaders», «fight off the invaders».

### Examples

- The Vikings were invaders who sailed from Scandinavia. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x1)
- The castle walls kept out the invaders. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x2)
- Cane toads are invaders that harm Australian wildlife. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x3)
- White blood cells attack invaders such as bacteria. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x4)
- In the game you shoot down alien invaders. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x5)
- The cat chased the invader out of its garden. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x6)
- In 1066 the Norman invaders won the Battle of Hastings. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x7)
- After this defeat the invaders, foreseeing a long and wearisome campaign, drew up their ships on land, erected tents, huts, &c., and formed an intrenched camp on the coast. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/I/invader/#x8)

### Note

Countable. From the verb «invade»; related «invasion», «invasive». An invader comes from outside; a defender protects. In history, describe invasions fairly: from each side's point of view.

## On Mova

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