subassembly
/ˌsʌbəˈsɛmbli/
noun
- A group of parts that are put together to form a unit, which is then used as part of a larger product or machine.
- The technician replaced the faulty subassembly in the computer instead of repairing individual chips.
- The factory builds the engine subassembly before attaching it to the car body.
- Each subassembly of the bicycle, like the wheel or the brake system, is tested separately.