coreunit

noun
UK /ˈkɔː juːnɪt/
US /ˈkɔːr juːnɪt/

A core unit is the main part that holds everything else together.

The engine is the core unit of the car.


OTHER MEANINGS

2. In computing, a core unit is one processing part inside a computer chip.

This chip has four core units working at once.

3. In education, a core unit is a required class everyone must take.

Math is a core unit in our school program.

4. In science, a core unit is the central sample taken from inside something.

The ice core unit showed old layers of snow.