a part of a part
Part of a part; a subcomponent or subset.
"The safety manual includes a detailed subpart on fire prevention that outlines emergency evacuation procedures."
"The employee handbook has a specific subpart that details vacation policies."
Usage: Use "subpart" when referring to a specific section within a larger divided whole, such as a clause in a legal document or a module in software code. Avoid using it for general components unless the hierarchy of parts is explicitly established in your context.
The word subpart is formed from the prefix sub- meaning "under" combined with part. It entered English as a straightforward compound to describe something that is a smaller section of a larger whole.