Wiktionary
subassembly
n. An assembly that is assembled with others to form a larger assembly
Usage examples of "subassembly".
Regularity of any kind, such as the repeating architectural features or the mosaic patterns in the corridors of PAC, or the nested arrays of optronics chips and subassemblies in some of the equipment cabinets, fascinated him.
I perform a rapid self-diagnostic on the processors and subassemblies governing control of my treads and discover no malfunction anywhere in the system.
On the mediatron, the subassembly drifted away from the main group under its own momentum, then slowed, stopped, and began to fall back toward it, drawn in by weak van den Waals forces.