IPA: //sʌb.əˈsɛm.bli//
KK: /sʌbəˈsɛmblɪ/
A part that is put together with other parts to create a larger product or system.
The engineers worked on the subassembly before integrating it into the main machine.
Subassembly → It is formed from "sub-" (meaning under or below) and "assembly" (from Latin "assimulare", meaning to bring together). The word "subassembly" refers to a component or part that is assembled under or as part of a larger assembly.
Think of a part that is put together "under" something larger — "sub-" means under, and "assembly" means to bring together.