IPA: /sʌbˈbræntʃ/
KK: /sʌbˌbræntʃ/
A smaller division or section that is part of a larger group or category.
The research team focused on a specific subbranch of biology that studies marine life.
Subbranch → It is formed from "sub-" (meaning under or below) and "branch" (from Old French *branche*, meaning a part of a tree or a division). The word "subbranch" refers to a branch that is under or a smaller division of a larger branch.
Think of a smaller branch that grows 'under' a larger one — 'sub-' means under, and 'branch' refers to a part of a tree.