auto-assembling unit

noun
UK /ˌɔːtəʊəˈsɛmblɪŋ ˈjuːnɪt/
US /ˌɔːtoʊəˈsɛmblɪŋ ˈjuːnɪt/

A machine that puts itself together by itself.

The toy robot is an auto-assembling unit that clicks itself into shape when you turn it on.


OTHER MEANINGS

2. A part of a factory that builds things without people helping.

The auto-assembling unit on the line puts the wheels on the cars.

3. A computer program that sets itself up on its own.

The auto-assembling unit installed all the files while we had lunch.

4. A group of tiny pieces that join together by themselves.

Scientists made an auto-assembling unit from little magnets that snap into a cube.